I love the banter on this site... and we couldn't have it without everyone's individual pov!
As long as GTD owners accept the GTD is inferior to the GTI then I welcome their opinion

Nah... I like the GTD tbh. It makes sense and makes diesels desirable I reckon. As for the R models then I think they should be welcome. GolfGTI is all about
the fast Golf... now there are just different models of fast golfs.
BUT...
Sorry to drag this back on topic but whether you want an older Mk5 or a new Mk6 is up to you. You could find an excellent Ed30/Pirelli and I would say get that but if it is standard Gti vs standard Gti... then I reckon the Mk6 is worth the bit extra. Whilst people on here will argue that the Mk6 is actually a Mk5.5 or whatever.... it is pretty clear that everyone thinks it is at least some improvement over the 5... if just not as much as VW would market!