Having been pointed at the main website a few days ago, I'm just starting out. What's the best receiver to get?

So far I've found one cache by maps alone. I guess it would be a lot easier with the proper equipment!

I'm looking at a budget of about 100 quid or so, so I realise I'm not going to get an all-singing, all-dancing model, but what can I get for my money? What features can I expect to get? Obviously a PC link would be a big advantage, as would proper maps, but how much extra do you pay for these features. What features should I be looking for?

Cheers in advance for the help!