Don't forget gear, etc. Last weighed I was at around 6700.
I use 6 ton stands (3 tons per individual stand).
For who to avoid? Harbor freight is probably a good place to start. They have had a slew of recent recalls and many folks here haven't used them for years due to concerns over quality.
My 6 ton stands have a safety pin on them, I would highly recommend it as it doubles up the teeth on the loading arm. The brand is pro-lift. I looked them over and found the weld quality to be acceptable (I chipped off some paint to check some bubbles I saw). I looked at a set of Hein - Werners that looked pretty nice.
In terms of brands, I wouldn't point to one or the other, but would say that if it looks quality, it probably is. There is definitely a reason to spend some money on them.
You can also build some safety Jack's with blocks of wood stacked and screwed. Then drop an extra piece or two on top to get close to the frame. If a quick repair or Trailside, I slide my tires/wheels under the frame as a measure of safety.
If I have my wheels off and am pulling and pushing on stuff while under the vehicle I like a lot of redundancy, but that's just me.