This endless GTI or R argument pisses me right off!
The problem is that most R owners simply cannot believe that there are people out there who simply want a Golf GTI because it IS a Golf GTI.
Most GTI owners could probably have afforded the extra to get the R but they just didn't want one. I'm one of those people, and no amount of performance figures being quoted will convince me that I made the wrong choice 
As i've been told before, this is a GTI forum. First and foremost. I didn't start this thread, but seeing it I thought I was worthy of some input. I have owned with my partner 6 of the 7 Marks of GTI. And an R since May, we still have a MK7 GTI.
My comments are based on all of that experience. When I was running a Mk 6 GTI i craved an R but could not justify it at that time. Now I can. Cost of purchase running costs, fuel, servicing, insurance is higher and generally there's the rub.
Yes the R is in fact more subtle visually than a GTI but only marginally, why not buy an R rebadge GTI add bits of red here and there, hey presto the ultimate GTIR. Only joking,

no snobbery here I can assure you.