GTR.......... big big running costs if uk car, if jap import then little better, as you can service yourself and no need for silly nissan pre/post checks. Tyres are silly money too. Would be awesome, but they are too detached, I felt this way in my evo.
GT3, etc..... im a one armed gimp, thats them out the window

(id love one though as curly says if only in PDK

)
I would love a superleggera(radders you lucky fucker

), bit out my range at the minute, although I nearly bought a gallardo 3 years ago. Just a normal one mind.
Its a hard choice for me being gearbox limited. I probably wont even bother getting something else when the csl goes, I'll have the M3 track slag, and bought the mrs a new merc ML sport. Use the astravan for work. Go out on my yfz450 quad on occasional green lane blasting, so no time for other cars. The CSL gets very limited use as it is.