Hmmm, that's a tough one as I've only used the mics on both headsets like two times. One thing I do know, both worked good and didn't have any problems. Now as far as feature set and quality, I'd say the g430 wins, it has a really nice bendable mic, and the quality sounded great. Both headsets have pretty much equal quality, but the g430 has better features. (Another thing I like about g430 is I can control surround and enable/disable the mic with my Logitech g500S G keys.)
I also forgot to mention that music also sounds great on both headsets (for non bassy stuff), but if you listen to heavy bass music then the G430 will sound a lot better for that.