I have an Uplift 900 desk, and it's awesome. I've only had it for about a month. Protip: don't just put in a standing desk and expect yourself to stand full-time immediately, or even 50% of the time - you'll quickly burn out and return to sitting full-time. I stand for about 45 minutes, then sit for about an hour or so; lather, rinse, repeat. I don't look at a clock, I just stand when I'm tired of sitting and sit when I'm tired of standing, and it seems to work out like that thus far. I'd like to work up to standing full-time eventually, but I have some back issues that will likely prevent me from ever reaching that. Nevertheless, some is better than none.