I would try to find titles in the genre that you like to listen to the most. If you don't like jazz, there's no way you're going to like a hi-res jazz recording no matter how wonderful it sounds. Here are some titles in my collection that I currently enjoy:
Pink Floyd: Dark Side of the Moon
It's fun to listen to as the surround effects are pretty cool. Also some really good bass on this album. Musically, well, you can decide that one.
Joni Mitchell: Time*Sex*Love
For general female vocal rock stuff, sounds great.
Anything by Louis Armstrong
I only have one album right now, but "Pops" is the man no matter what material he's on.
Eric Kunzel and the Cincinnati Pops:
I think the album is called "Swing".
The John Pizzarelli tracks on this album really stand out.
Hope that helps for a start. I'm a general music fan so my tastes run the gamut. Please post any you find that you like.