I've just been looking at a few on the 2.1 page that are in my price range, which of these are the best:
Altec Lansing VS2221 2.1 Speaker System - Retail - £31.67
Creative Inspire T3030 2.1 Speakers - Retail - £33.49
Creative I-Trigue 2.1 3400 Speakers - Retail - £55.17
JBL Creature II 2.1 Speakers - (Black) Retail - £55.17
Logitech Z-4 2.1 40 Watts Speakers - Retail - £52.82
X-Tensions Full Metal 2.1 Speaker System - £46.94
SpeedLink Powerstixx SL-8225 2.1 42W Speaker System - £58.69
I'll only go for these if they're an amazing deal...
I'd increase my budget, but I really have too much to buy, and it'll take me years to save up if I get the most expensive stuff - I'm still a teenager!