Thanks for all the info everyone! As was said, much depends on the skill of the individual fitter. I guess this starts with Steve Hogg and works down from there. I use a guy here in NJ that does a LOT of fittings (He's supposed to sell more shoe wedges than anyone else in the NE.), and it's all eyeball. If I could find someone with his level of experience, and using a computer graphic like Retul, I'd probably make the investment.

Although he set me up on both my Parlee and my Scott Addict, I have waaaay more power in the drops on the Addict. Both have Fizik Arione saddles and pretty much the same measurements. If I get a TT bike, I'd really like to get the level of efficiency I have on my Addict.

If anyone had recommendations for fitters in the Philly-NJ-NY area, I'd appreciate them.