One's mine, one's my BF's brother's.
For the price, I'd say it's pretty hard to beat - but only if you think you would use the pads. The keys are a bit too light for my taste, but they suffice for what I need. I primarily use the keyboard part for writing synth melodies and putting in some chords here and there.
I have basically an MPC style sampling setup in Reaper that I control with the pads on this, I can send you some info on how to set it up if you're interested. I use the pads for all my "live" drums to give a bit more of an organic feel.
I never use the knobs or the arpeggio function, but they seem to work fine.
The joystick-style mod wheel takes some getting used to, but I like it a lot.