I concur with everything that Geoff said as that is also the way we approached it - our second time around.
One thing to be aware of is that a number of manufacturers do most of their manufacturing in about 100 miles of each other in the midwest. I think Indiana or thereabouts. They tend to trade a lot of people back and forth. Their look and quality tends to be very similar. (Not generally the best.)
Also, when you look at forums you will of course see the issues. And a common refrain throughout the industry (even Airstreams) is that quality control can be disappointing. Of course its better with some brands but none of them are perfect. Geoff's point about speed of assembly is part of this problem. The other is that you are essentially shaking your "tiny house" like a 7.5 earthquake for hours at a time. And finally, most of them (if not all) use the same brands of appliances. That's good and bad. It means that finding a repair person familiar with a Dometic or Norcold or Coleman or whatever is easier. It also means that the appliances may or may not be a differentiator.
One thing we did notice with our first trailer is that it looked "fancy" on the inside. But underneath the quality wasn't that great. Many of these manufacturers build their trailers to sell, not necessarily to last.
@coleAK, I have also heard good things about Outdoor RV. From what I understand, their focus is more on trailers that can go off pavement. They admit right up front that they are not intended to be "lightweight" trailers. Rather, they are supposedly build with stronger, yet heavier, parts. But I haven't experienced one.
I have also heard of people who have chosen to go with an Artic Fox over a Lance.
For a solid, quality trailer that isn't an Airstream you should expect to pay >$30, likely more unless you're getting one off the lot or end of season and of course depending on size. And they all have their issues. Even Airstreams. Both Airstream and Lance are slung low to make for better towing. Some people don't like that as it can be problematic when going off pavement. Slides are awesome but they can sometimes be problematic. It depends on the quality of the design and manufacturer and if you take care of it.
And, yes, trailers require a fair bit of care. And they can be abused. My financial advisor loves to hunt. So he buys a used trailer then takes it up in the woods during hunting season on some roads that I wouldn't take my LC on. Trailers last him about 2 years if that.
As for quality issues, I talked to someone camped next to us a couple weeks ago who had a brand new 5th wheel. I think it was a Surveryor if they make those. Can't remember. But the story he told me is symptomatic of the industry. They had had this 5th wheel for about a month. Only camped twice. Always drove on pavement. Fan stopped working. Water pump issue. His niece was sitting on the inside looking at the windows on the slideout and noticed that she could see light around the outside of the window frame. A similar thing happened after they pulled in their slide. They could see light from the outside along the edges. No weather stripping or water protection. No of course these things can be fixed under warranty but warranties are a hassle and typically only good for a year. The deeper issue is that some of these things are treated with a "that's just the way it is" attitude by dealerships. I know this sounds discouraging. But best to go into it with your eyes open. Demand/do a thorough inspection before accepting delivery (there are Pre Delivery Inspection lists out there on most of the owner forums.) For the first couple trips go somewhere close (local state park, etc.) and try everything just to see if it works. It also helps to have a bit of a handyman skillset. And, finally, be patient. Things will happen whether it is with the trailer or the "oops" that we all do when using these things.
Finally, there is a HUGE amount of personal preference that matters. Lance makes 4 models in a very similar size and price range to what Geoff and I have. One (Geoff's) has bunks in the back which is great if you have kids or need the storage. One has an outdoor kitchen and an electric fireplace/infotainment center (yes, they all have infotainment centers - usually with really bad systems) between the up front sleeping space and the rearward "living" space and kitchen. Two of them have the bathroom in the middle with the sleeping space up front. But one puts big windows and a sofa in the back while the other (ours) has the kitchen in the back and puts the sofa/window on the side opposite the dinette. (The dinette is a 3' slideout on ours but on the one with the windows in the back it is only 2' and has a smaller table.) Different floorplans can make a huge difference to living in them. Going to an RV show and pretending like you're living in one is a good idea.
Or just get an offroad trailer with a large RTT and you'll have a lot less things that can go wrong. And your "floorplan" because your campsite.
As far as forums:
- Forest River has a number of brand/model specific owner forums.
- There is an Airstream forum called Airforums. (I used a great thread on there about the ProPride hitch we have.)
- For Lance there is a forum called Lance Owners of America. But beware. They tend to think that everything should be towed with a truck.
