I have a set of the Base edition, a set of Dominators, and a set of the new Attitude. Main differences, the base must be cabled to external receiver they don't have a provision for a built in RX module, they do have adjustable interpupillary distance which is a must feature IMO, they are however the worst of the three for color and image clarity. The Dominators have much better color and clarity and also provision for a builtin vRX and head tracker, they DO NOT have adjustable IPD. I spent a good part of this season only being able to see one screen clearly and about half the other due to the narrow nonadjustable IPD of the Dominators. It was certainly nice to be untethered using either a 5.8 or 2.4 module in the Doms but the screens not being clearly in focus was a big minus for me. The Attitude has even better color and clarity to the displays than either of the older versions plus the abjustable IPD returns. The builtin vRX however is just that, builtin and not swappable, not a big deal if all you ever plan to fly with is the 5.8 frequency, I'll now have to setup a relay on 5.8 from a splitter to stay untethered when using 1.2 and 2.4 or go back to hooking up a cable to the ground station RX.
The vRX module in the Attitudes is far superior to the module that came with my Dominators, previously for the best signal on 5.8 out at the limits of the field I haad to cable the Doms to the ground station as the internal 5.8 RX module just didn't have the power to keep a solid signal even with a crosshair antenna on them. The Attitudes so far have proven to be solid all the way out to the range where I start getting radio failsafes on 2.4, a huge improvement over the Dominators, and with the adjustable IPD I can clearly see both screens again, the extra clarity and color balance of the Attitudes is a bonus.
As far as flying goes I find it much easier with the Attitudes, the immersion factor is the best of any set of goggles I've used so far. For me a monitor is not an option for serious FPV, to easy to get distracted and not watch the screen plus there's no way I could fly like this with confidence without the immersion factor of a good set of goggles...
http://www.youtube.com/watch?v=hrAcKOWWOFo
If you want the best that Fatshark has to offer right now, pay the few extra $$ and get the Attitudes they're better than either of the other versions.
Ken