So im halve way threw my pc build and i was wondering if i should buy a "gaming" headset like corsair 2100, 1500 or razer kraken. i have the athm-50 so should i just by an external mic i would be playing fps and indie games
ATHM-50 will be better than any gaming headset. Just purchase a microphone.
If you're not competitive the M50s with an Antlion Modmic will do just fine.
If you're competitive you may want a headphone with a larger soundstage.