I recently, as early as last week, bought the Qumi Q2 and I'm extremely happy with it. This is our first projector and it's the center piece of our home entertainment system. It replaces a 25 year old 27" CRT television...yeah yeah...
I was a little bummed to find the Q5 coming out in the next couple of months, but after reading some of the specs and what additional features it brings on top of the Q2, I won't be upgrading.
I am not interested in the additional web browsing features. We have a PC for that. Even being portable, our PC is a bookshelf based ITX spec PC. It's not much larger than the Q2 anyways.
I'm not interested in the onboard memory, size(it's bigger with that battery anyways) or two watt speaker.
Granted, I'm not the market for this projector. I wanted something with good color, bright enough to use in our living room during the day and no worries about bulbs...that's what I got with the Q2.
If they make the "Q9" with the specs as suggested by Romi12, I'll get one.