So as to not show any brand preference or outright brand-whoring - and since you're on a bit of a budget, it would be my advice (as I suggested in your other thread) for you to do some
regular spying on the "For Sale" section of the forum here or even place an ad in the "Wanted" section -
http://www.oople.com/forums/forumdisplay.php?f=2 - being as I'm always seeing deals being posted (there's even currently a 22 going for £110), and you don't know what you could come across if you don't at least try.