For my two cents... It took a while but with the help of this post I ended up with and bought in this order.
Mixamp Pro (2010)
I absolutely love all three. The Mixamp is a great solution for console with good features. The Q701 is usable with the Mixamp though mixing in the Mic will seriously impact the Mixamps ability to drive the Q701. Without Mic it is adequate. That being said the addition of the Objective 2 was a very noticeable improvement. IMO one should not consider the Q701 unless you are prepared to shell out for an amp at least after a while as I did. I was happy with the Q701 without one but can honestly say that I was missing out before.
I built my O2 for about $80 for all parts and shipping, including some upgrades. However, do not build your own unless you already have some experience, tools, static protection and such or it will end up costing more than a finished unit. Also, even if you have all of the above it's a pain. I only built my own because I knew I could build it properly and I wanted that peace of mind.
Edited by Heretic817 - 1/28/13 at 3:38pm