I test drove the Polo GTI yesterday, I must say I thoroughly enjoyed the drive. The feel resembles that of my Golf Mk2 GTI more than the Mk5 GTI, (no doubt the manual transmission helps). The gear change, the acceleration, the nimbleness, all excellent. It's like my Mk2, only much quieter and refined.
I also test drove the R32, I heard a lot about the "growl" of the engine, but the growl doesn't come close to my Mk2.......
So my pick is the Polo GTI......if only they import the version with 2 doors less......