I love how HD texture packs look so... well, HD but I haven't actually liked the look of the texture packs I've tried so far. I'd like an HD version of the default if that exists. Suggest me any good HD texture packs you have in mind. By the way, I've already tried dustcraft, GeruDoku, and Misa's Realistic HD Pack.
Have you tried Mixcraft HD? Koolwitak keeps it pretty updated. I'm trying to download it myself, but I'm having a problem with it. But don't let it discourage you.
viewtopic.php?f=25&t=77442
If you like a "hand-painted" look, try Ovo's Rustic Pack.