Hi Dave, and welcome to the forum.
I have a MKV R32 on order and felt compelled to register/post. I've just read the entire thread and I have to say there's a lot of "wrong information" and a general underlying hint of jealousy which I think is a shame. It seems as though everyone's trying to justify their purchase.
I personally don't hink anyone is trying to justify their own purchases. I do however think we are all trying to dispel, as you state, "wrong information", particularly around some of the unrealistic comments which indicate that the R32 is a quantum leap ahead of the GTI. I think we all here go about that in a generally friendly manner, and just because we have a bit of banter on the way, I personally don't feel there is any jealousy. If there were any jealousy, I think I would be on the receiving end, if you look at my sig!

Here's a Top Gear vid that compares the GTI and MKV lap times. I'm fully aware that this is an isolated test and may not reflect the true performance difference that you'd get on a variety of tracks with different driving styles but it may help to stem the tide of unbalanced comments...
http://www.youtube.com/watch?v=xjtTuBTJYSc
Hmm, that vid repeatedly states the GTI does not suffer from understeer, but the 32 does. Also, on the very last "Gambon" corner, the R32 runs horrendously wide, yet the GTI holds a better line. Oh, and you can't state the vid is comparing lap times, as they are clearly done on different days.
Clarksons' quotes of the GTI:
"looking very, very tidy", "no real understeer at all"
And Clarksons' quotes of the R32:
"front wheels spinning . . . before the computer shoves more power to the back", at the hammer head - "a heavy V6 at the front, that will make it understeer", "you can see the car coming back into line as the electronics shuffle the power around".
One crucial thing about that test, just like all "airfield" type of tests it that they bear absolutlely no resemblence to real world roads. We have much tighter bends, we have to stop at junctions, and the most crucial thing - we have to keep our cars on line. If we loose the back or front, then you will find a kerb, ditch, tree, dry stone wall, or another road user!
It is in this "real world" environment where the GTI, with its' much more neutral handling, is better than the R32.