Can't help you with that brand in particular, but in general I have a lot of good things to say about pop-up truck campers. We've had ours for 6 1/2 years and we love it. Its a Sunlite Eagle (SunValleyInc.com) Its been a good unit and a good value, and haven't had any trouble with it. Its a great 3 season camper. We have camped it in during the winter, and its OK but I don't think I would do it reguarly. The pop-up part only adds about 1 minute to set-up and departure.
If I were buying one today and money was no object, I would get an Outfitter (outfittermfg.com) Pricey, but nice.
Another popular one that is a little more spartan is fourwheelcamper.com
Good luck
-Vic