Ha ha, this old chestnut.
I bought myself a pair of secondhand Haglofs Grym hiking boots off eBay, they aren't cheap when new (£200 +), but I got them for £35.They are excellent. Dry and warm feet. This will be there second winter.
I've tried North Face boots, which are comfortable, but don't tend to stay waterproof for very long.
Looking at some Salomon ones on ebay at the moment. They seem to have a good reputation.