Torterra is just too beast to let go.. ;) Speed EVs and IVs won't do much to help his disgusting, low speed.. But that's why you need learn how to prolong his life with items. :)
Same goes for Charizard.. However, even though he is probably my most cherished pokemon, he is simply too weak when fighting against trainers who take EVs and IVs into serious account. D;
Nonetheless, I still keep them in my team with their random EVs (IVs and Nature, I check, aha) because I love to use them in battles against real players. I believe that I'm also entitled to bragging rights if my random-EVed pokemon defeats another trainer's strict EVed pokemon. ;D