rims - which ones?
I have two sets of wheels for my commuter.
Both are 6600 Ultegra hubs
both are dt comp spokes (32s)
one has mavic cxp22s the other has velocity aeroheads.
Which one for cross and which one for commute? Or rather - which one for my main cross wheelset (Ill have the other set ready for race day as a back up)...
Horses for courses really.
Remember that if the rim widths are significantly different, you will have to adjust your brakes a little when using the spare pair....