As for the Impreza, the 2.0 seemed OK to me for a compact car, except that it took a while to get the revs up when you floored the gas from a standing start. I didn't try using the paddle shifters for an acceleration run, but that might have helped.
You should try an FB20 w/ 5spd manual. You're so frustrated by 3rd gear, you want to jump out. LOL.. it's not that bad. Comparing different vehicles, but my 2012 Legacy EJ25 w/ CVT was no power house either. I never expected it to be.
... and the above comment about Imprezas having plasticy interiors? Ummm. It is an AWD vehicle for $18K. Huge shock there.
My Crosstrek gets most of it's use on my 80mi work commute. Plenty powerful at ~70mph, plus the gearing is low enough, you rarely have to throw it back in 4th. The rest of the time, I'm shuttling my kids. The 5spd BLOWS for that.