It's true. A really good headset plus mic should run you over 150 EUR / 200 bucks. There's just no way around it if you want quality. The Senny's that Tasteless/Artosis use on GSL are over $1,000 EACH.
i had still have as a backup a
20 dollar headset from senheiser and i noticed only slighty worse quality than my steel-series 5hv2 headset. ya know minus the simulated surround sound theses things kicked ass.
also the mic to is this
one make sure you get a headphone with a thick cord though.