I haven't personally been terribly fond of any of the Logitech keyboard + mice I've come across. They've traditionally been more affordable than than comparable Microsoft products, but something's always a little bit "off" for me.

I need to reiterate that the Comfort Curve of the Microsoft keyboards — still unique I think — is really the deal-sealer for me. I had a good feeling since the first time I saw it, and in hindsight, it's really made such a positive difference.

Holy moly I just realized how long that review was; go figure, my hands must be feeling good!

All of this really feels to me like tuning and racing performance-geared automobiles. There's so many little corners you can nudge to make measurable gains.