I'm thinking of taking advantage of the TomTom trade in program, buying a new XL 335S off the TT website for 9 and then trading in my 910 (excellent condition) for , for a net cost of for the XL 335S. The downside is that I have Euro maps (old, but still useful) loaded on the 910 that I believe will not be compatible with the 335S. Alternatively, I pick-up a new US map, which needs updating on the 910. Does anyone have a different opinion, particularly from those experienced with both models? The sale on the TT website runs through Saturday, 11/28. Thanks.