You're bound to get loads of different replies from people who have a laptop they like. My reply is no different - I've got an Asus A6U series, it's higher than the price range you suggest but they do make lower spec models as well. There are online dealers who specialise in Asus models, found easily on Google. The thing which impresses me most about it (apart from value for money) is the build quality - it feels solid and durable without being overly heavy. It's just generally good.
If I were you, I'd steer clear of unknown cheapo makes. My mum's just got a free one through the school where she works. It's an unrecognised brand, obviously very cheaply built and plasticky and the build quality is poor. The keyboard flexes down in the middle when you type, for example.
I suggest you pick up a copy of "What Laptop" - it's a good magazine and can probably help point you in the right direction.