Had a VF22 on my 03 WRX with FMIC. Looking at about 4000rpm++++ for peak.

Tuned by Lane at Racetorque. 1.3 bar.

My friend has a 03 or 04 WRX running on VF34. Very responsive and pulls all the way to redline.

You can do reverse manifold and cut down a little on lag. Not sure by how many RPM. Got to ask some of the guys whose done it.

At the end of the day it depends what you intend to do with the car than decide which turbo is suitable.