I've had mine for 9 months and on the whole I feel like I'm a bit faster typing than my previous MBP although I haven't actually instrumented that. One thing I

I've had mine for 9 months and on the whole I feel like I'm a bit faster typing than my previous MBP although I haven't actually instrumented that. One thing I find is the keyswitches do seem to collect bits of dirt/crumbs and the like around the edges, and when that happens some become a bit sticky or dead feeling which definitely leads to typing issues. I give mine a good cleaning on a weekly basis with eyeglass cleaner wipes - I turn it off and rub vigorously over the keys. To really get the junk off around the key edges it can take a few passes, and when done well it feels like new.