Reply to USB Headphones

Hey all, I'm very new to producing music (started with FL last week, now learning Live) and was believeing about buying a Arturia 25 key Keyboard Controller I saw in a thread a few days ago. My only problem is the latency that I get when I'm using my actual usb keyboard. I want to be able to play on the MIDI Keyboard without any delay when I'm pressing they keys down, and a friend told me if my soundcard wasn't very good I could get a good set of USB Headphones that would make a big difference. Anyway, here are a few questions...

1.) Will a good usb headset give me lag free playing with said Keyboard Controller?
2.) If so, what would a good one be?
3.) If not, what should I do about it?

Thanks
~ K1K0