If you really love the GT40 then there is no place else to go. Its interesting to hear people talk about a car being "better" than a 40. Depends on the criteria. If by better you mean faster (round a twisty), handling limits which are easier to access, less fuel, more comfort, total reliability, good sound system then buy a porsche GT3.
If by better you mean a charismatic icon, stunning proportions, more power than even a well fettled chassis can handle, total driver involvement needed if your going to push then the 40 is king.
I readily concede that there may be other cars you could love, but for me the basic equation remains the same as for the 40 and would result in cars ranging from the DBR1 Aston, Ferrari GTO, Lindner Nocker ally E type to Porsche917 popping into my garage from time to time. Oh, aint dreamin' great fun. Charles, good idea for a thread.
John