Why would you ask for recommendations on a crankset when only you know how strong of a rider you are and what kind of riding you plan to do with your new bike? If you run a standard double now and plan to use the new bike for the same purpose (and have confirmed clearance for that crankset, not that I believe it will be an issue), just use the same gearing. If you plan on using the new bike for actual cross, you should probably get a more cross oriented crankset, whether that's a true cross crankset with closely spaced chainrings or a road compact. Personally, I'd get the best of both worlds (and more) and get a road triple. All the low and high gears you want (depending on which chainrings you use).