I've never been to Spain (beyond Barcelona, at least.) But my favourite country continues to be England. I like Italy, but the driving is insane and for whatever reason Tuscany and Umbria never really get me that excited. I'm not a huge fan of big cities anymore, so I doubt I'll ever revisit Florence or Rome. I really enjoy the coasts, though.
I'm really, really looking forward to revisiting Croatia, though. The clear water, the sun, the views, the fantastic weather...and really very, very affordable. I have very fond memories of renting a boat and snorkeling there. Hvar, Croatia seems like the perfect antidote for English rain.