so what would make me enjoy my games more.
I currently have no speakers, onboard sound, and some cheap plantronic gamecom headsets with a busted left earphone

so what would be a better upgrade to enjoy my FPS games
Logitech Z5500 speakers
Azuntech X-Fi prelude sound card
Undecided 5.1 headset

If you vote for the headset which should i go for?

If your room is a suitable shape + layout for 5.1 speakers then i would go with the Z5500's otherwise just get some nice headphones

If you live alone go with speakers, if not get headphones. I don't use my speakers anymore since I have to have them up high to actually hear small noises. So I just use cheap JVC Marshmallow headphones. My speakers are cheap logitech 5.1 X-530.

alright thanks I'll buy the X5500's then

I didn't like my Z-5500's.

I would say, go with a Sennheiser HD280Pro.

I saw the 280pros but i wanted a MIC for online gaming, turns out I'll be receiving money so I'll just buy the PC151's along with the Z5500's

I didn't really like my HD280Pro connected directly to Realtek onboard audio... with flat EQ they sounded pretty lame (HD280Pro has a massive bass rolloff that starts pretty high), and adjusting the Realtek EQ much at all results in distortion... so if you don't have a PC->amp->HD280Pro set-up, I'd go with something else... the PC151 you're considering sound pretty good, even with flat EQ from Realtek...

For the cheap-but-decent I'd probably say check out the HD212Pro if you can listen to it in-store anywhere...

edit: lol, too slow... Zalman do a decent clip on mic that doesn't cost the earth... you can clip it on the headphone cord and it has several mini clips to clip it along the cord too...