i want to get some low cost speakers to put on my xbox. i have read reviews on both of them they are about evenly matched. i was wondering which ones should i buy out of the two.

Here is a good url for shopping.
http://www.pricewatch.com/
Next is a good url for test reports etc.
http://www.tomshardware.com
Both of these are BIG. It may take you a few minutes
to learn how to navigate.
I personally own the Altec 621 which is a ordinary stereo, thats 2 speakers and a Subwoofer. It has a good amp 3 that is 2 twenty watt rms for the left and right. Then 60 rms for the sub. I like it very much.
Here is a url to one of the comparisions for the brand you are considering.
http://www.tomshardware.com/consumer/20021127/xmas_2002-10.html#high_end_altec_lansing_4100_speakers
HTH.

my 2 piece altec lansings with sub are 5 yrs old and still ging strong ,everynow and then i have to fix the volum botton ,just an adjustment ,other than that they work great ,have never like anything by logitech!!!:)