In all honesty, your best bet would be to get down to the next Bury meeting and spend as much time as possible chatting with as many people who'll talk to you. You'll be able to see what's most popular, particularly if you're in need of setup help, spares on the day etc.
All the modern 2wd cars are competitive.
EDIT: Meeting on Sunday -
http://www.oople.com/forums/showthread.php?t=202468