Yeah, I can completely understand your reticence about that bumper. It just seems like ARB and a few others are more popular, and they are, but the reasons are simply they advertise, market and support their product a bit better. But having seen TJM bumper on 80 series, I was hooked, but it has been perplexing to see one installed on a 100.
My path to a decision was just to find some fabrication guys that had previous experience with the TJM and all said that if it did require some bending here and there, it wasn't a big deal. So to make a long story short, some of the people selling the 'other' products know they'll end up doing the install and they simply want to make their lives easier is my guess.
I like the design of the TJM and the jacking points in particular. If it's going on my rig, I have to like it, so the main obstacle was simply would the TJM fit. My only advice is make sure you have an install guy that handle some fabrication work if necessary. I'm convinced that TJM would sell more bumpers in the US if they marketed a bit better and supported their product, but I think they're content with the market share they have..