Heres my favorites:
1) Model 47 Medusa, I'll never be able to find or afford it, but i love the concept
2) HK usp w/ .40 super barrel, i will have this.
3) Yugo m57 tokarev, the only one i own, accurate as hell
4) Raging Judge Magnum, hunt quails, elephants and everything inbetween
5) La Mat revolver, love the innovation behind this beauty
6) 1895 Nagant, yet another unique revolver, if only ammo didnt cost so much
7) Glock 21sf w/ .50gi conversion, this round is so underrated
with those 7 i think i'd have everything i needed, A mares leg might be cool thogh