After a lot of knife research, I eventually bought myself a couple of MAC knives - the MAC MTH-80 Chef's knife, and the MAC SB-105 bread / roast slicer. I'm still waiting on the bread knife to arrive, but the Chef's knife is far and away the best, and sharpest, knife I have ever used. I highly recommend them if you're looking for a new blade!
I'll be looking for a good utility knife and cleaver next. What do you guys use / recommend?