Are you sure the Sram equipped bike's components are 2006?seemana said:
I don't have any experience with that old Sram stuff... But if it were 2008 or 2009 I'd take it over 105 any day. In particular, the shifters are a lot lighter. Not that 105 is bad. I just think Force is better over the past few years.
Shifting is different with Force. It's easy to get used to, though. The only people who seem to not like it are those who regularly ride several bikes with the different methods of shifting, and find it inconvenient to switch back and forth.
If there is any part of the Force group that's weak, it's probably the crankset. I've seen several where the axle has come loose from the spider, and one or two where they were misaligned right from the start.