Uprading groupset

pbt150 Posts: 316
edited February 2010 in Road buying advice
I'm going to be upgrading my groupset from 2007 Sora to something 10-speed in the next couple of months, and I was looking for a bit of advice.

My options as far as I see them are Shimano 105 or SRAM Rival, that sort of price bracket. I've heard good things about both, but am tempted by the Rival being a bit lighter and looking a bit cooler (and yes, I've done some research into the different shifting mechanisms and I think I could like with double-tap). Anyone got any advice one way or the other?

Assuming I buy one of these, I've also got a FSA SL-K carbon crankset that I picked up very cheaply last year - would fitting this with a FSA Platinum Pro ISIS BB be an improvement on the chainset that comes with either groupset?

Many thanks