I just finished my massdrop ergodox a few weeks ago, and I'm loving it. One of the things I like the most about it is the way the left and right hands are separate, allowing me to keep them about shoulder width apart in a very natural position. That was actually the biggest selling point to me over something like the kinesis or the TECK. The split layout feels like it's really revolutionizing the ergonomics of typing.
I have a Kinesis Freestyle (another split keyboard), and I absolutely agree: being able to keep my hands further apart is wonderful.
There wasn't anything like the ErgoDox available when I purchased my Kinesis, but if I were in the market now, I would definitely consider it--the thumb-area modifiers are something that I would have liked to have had.
I got my ergo dox on the one drop that had an assembly option. It's a really nice keyboard. Someone needs to mass produce these. Best ergo keyboard I've ever tried.
