As said above really, you spend so much money getting them where you want them to be, in the process making them potentially more unreliable.
I wouldn't be without mine for love nor money to be honest, not because it owes me too much but because there is nothing out there (Evos the only exception) that gives you anywhere near the performance for the money.
As was said in this thread, it would be horrible to find out through scabbynet that the guy you sold it too has got an absolute minter. Completely sorted car and he can't believe how lucky he is to have it.
Stick with it mate