I have QA1's now.
I'd go back to Bilstein's though.
I've driven a couple of JTSVP trucks with their shocks and I liked the ride. What I didn't know was the settings I was riding on. If I was in the market to spend for an upgraded shock, I would likely buy his.
The main thing I don't like about the QA1's is they're adjusted about 3/4 up to firm - I wish there was more adjustment.
I haven't tracked the QA1's yet, but I'm pretty sure they will still be too soft (for my preference, anyway.)