Neither one has what I’d call “lightning fast response” to the touch-screen, BUT one little-known trick that really gave both units a speed-boost for me was replacing their cheap SD cards with faster versions. The stock SD cards holding their map data are “class 2″ at best. If you copy the data over to a class 4 or 5 type card, it will give much better performance.

All else being equal though? I could see a speed increase in my “Max” over the plain 2100 model, so they did put a faster processor in it. But you’re going from “laggy response” to basically “a little less laggy”, instead of “lag-free”.

To me, the lack of immediate response when it’s looking something up is far from a “deal breaker” on these units, though. It’s a small annoyance, but not one I’d pay $100+ more to get rid of. Once you get an address put in and start driving, it responds just fine. (I’ve had other units that wouldn’t tell you to turn until you PASSED the turn because they were too slow! Neither Navigon should ever do that to you.)