I've tried the whole gamut of routers/modems/hubs over the years.
Belkin (several units) were dreadful. I had a variety of others which ranged from "fair" to "OK". Netgear was the best of those.
I've never regretted buying the Draytek. It wasn't cheap, but it's been excellent.
I also have a Cisco, which is brilliant, but a nightmare to set up. That's probably overkill for a home application.
I have an "original" BT Home hub in the cupboard. It gets used quite regularly for testing out ADSL for friends who are having trouble. I wouldn't use it as my own hub, though.
If you're happy with BT Internet (I know some folks are), and happy to sign up another spell, why not take their freebie. If you might want to migrate from BT, then I'd go for either a latest-model Netgear (read the online reviews to decide which is right for you) or more likely a Draytek.