For sake of full disclosure I don't own any goggles but have flown with both the base and Dominators on friends systems.
Base: Larger field of view (noticeably so), colors/contrast "washed" out a bit, a tad on the blurry side especially at the edges (if you fly with an OSD this can be problematic)
Dominators: 5 degress less field of view is noticeable at first but quickly forgotten after being on head a few minutes, very crisp image, added advantage of adding head tracking down the road if you wish.
I say opt for the Doms, price difference is well worth it, that being said i have seen rumors of a Base HD coming out sometime in the near future.
As for me, I will continue to stick my head in a box and stare at a 7" screen.....not one to give into to change quickly.