My Ultegra 6700 shifters need replacing and I don't have the bucks to go back with Ultegra. I have a triple ring up front with 10 speed cassette in back. Unsure which set of 105's I need. The 5700 sti triple 10sp or the 5603 sti triple 10spd? Unsure of the difference in the two. Wiggle has the 5700 triple for $212. Anyone know of any better deals going on right now?