Just to re-iterate what Chris said really i'd highly recommend 2wd to start with as it's so much cheaper and easier to maintain.
If you go along to Stotfold i'm sure the regulars will be happy to show you the current gear and what cars are available but again as Chris said you can't really go wrong with the Associated B4......
If you have a budget in mind it would be easier but there are a lot of good cars available 2nd hand so always worth checking the classifieds here or looking on Ebay!
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