The only reason you would go for a mk1/2 is for a track day (that is of course if you really dont care about comfort). It would be a faster/better handling car!
However if you wanted a car to get you from A to B in comfort then I guess it would be the mk4!
The boring TDI build:
http://uk-mkivs.net/forums/t/229650.aspxThe Quattro GTI build:
http://uk-mkivs.net/forums/t/302090.aspxLoads of stuff for sale:Half FIS Bora SPORT IMMO3 clcoks, bumpers, valances,seats...just pm me if you need anything.