A-Wing and Interceptor, without a doubt...
A-Wing is to-scale, has freaking pop-rivets even sculpted on... It's simply amazing. Give it a decent pilot, and a good paintjob, and that sculpt holds up even against the likes of "X-Treme Detail" 1:18 airplanes and other items of the lik.e
The A-Wing just was a nice ship when it was made, which has lasted even today. THat's a rare quality in a vintage sculpt.
The Interceptor's my close runner-up, again because it's in-scale. It slightly lags behind the A-Wing because the cockpit pod is of course inaccurate. Beyond that it's close enough to suit me.
Give it a rounded (noo battery box) pod and it's at least a tie with the A-Wing... I'd ALMOST like to see it re-released, but only if it were DEFINITELY the same color as the current Interceptor is. I don't want them looking like shite next to each other.
The TIE from KB was supposed to be properly colored, but low and behold Hasbro made it SLIGHTLY different. Enough that you can't swap it with the Int's wings.
Beyond these 2 vehicles, I am not fond of most of the POTF2 range, or POTJ. Underscaled is many of the vehicle's major issue(s), but some are simply terribly sculpted... The Y-Wing comes to mind there.
The Speederbikes and Snowspeeder are the rare breed that are overscaled. Wish we'd get a new one of each of these too.
With a new Ewok Glider, maybe a new "simpler construction" Speederbike will happen? Who knows.