I bought a Topfield 5800, which wasn't expensive, and downloaded some extra firmware for it. Topfield have the big advantage that you can upload stuff into them - and it's easy. There's a brilliant freeware package called MyStuff which is the bees whiskers.
It has two tuners, so can record up to three things at once (but on no more than two multiplexes) and has a hard drive so space isn't an issue.
It doesn't have a DVD writer in it, but we tend not to want to keep stuff. Some recordings have been on there for a year or more, but most get wiped after a week or so.
I did once plug my laptop into it to burn a DVD of something my daughter wanted, and that worked.