Hi rowdy, and cheers!
Mostly went for the Pok3r for the space, a little for the looks (standard bottom row is a bonus) and a (relatively) cheap way to try some new switches. I seldom use the number pad on the K70, unless I'm hitting enter with my mouse hand, so don't really miss it, and for the occasion where I need arrow keys, the toggle for shift, fn, pn, ctrl as arrow keys works nicely. My K70 has browns and I went for reds in the Pok3r to give a linear switch a go and I really like both.
The DIP switches for Dvorak and Colemak were also appealing - toying with both at the moment, but not yet chosen a direction. Typing speed is a little frustrating at present however...
As for my favourite - probably the Pok3r for now, but that is probably because it is a change from the norm - I'll probably find myself switching between them as the mood takes me. What is your board(s) of choice day to day? Do you find yourself switching between them a lot?