jwc-- I have a Vectorflight Extra that I hope to put together this summer sometime. I have inspected the contents, gone over the manual, fingered the pieces, like what I see. As they say, the price is right and the quality is decent. I like the looks of the Sukhoi but went for the Extra because it's a popular model around these parts, I like the way I see it flying (other pilots, other mfrs), but I'd like to try a Sukhoi as well. I think the Edge with its mid-wing location is maybe a little easier to fly, but all the Extras I see have very stable flight behavior, and their pilots love them.

I do think a .60 size engine is less than what you'd want if you have aerobatics in mind. I will probably put a .91 two-stroke in mine, possibly a 1.20. I'm flying a .91 Magnum right now in my Kangke CAP 232 Sport, and it's adequate in the verticals, but when I throw in a roll on an upline, I don't have a lot of oomph left to complete the line. The engine is still new though (on its second gallon) and will probably tune up stronger after a few more gallons.

I would definitely urge you to move up to coreless servos for a plane of this capability. You will like the difference, assuming you're accustomed to standard or three-pole servos.