Are they worth it? I am waiting on a new neck and wiring for my Strat. After I get those things put on the only thing that will be stock will be the body and the bridge. Now I am thinking I should update the bridge assembly (tremolo) to a Callaham version. The website claims it will sound better, is this true or is it gear snobbery? I have trouble believing the sound will be much better but the parts quality will mostly likely be. Who has these on their Strat and do you think its worth $120 for the kit?