I'm a huge fan of the Eminence Wizards. I've used them in conjunction with several amps/speaker combinations, and they've worked great with everything I've played through them. It's voiced similar to the Celestion G12H-30, but is much more efficient and versatile. The Celestion Vintage 30 is also a very nice and versatile speaker. I have one in my Traynor YCV50 1x12 combo, and it sounds great, and records extremely well! I can't wait until I can get the rest of my gear up here so I can try the Wizard out with this amp.

I hate to tell you, but you're going to have to use your own ears to let you know what sounds good. We can suggest speakers for you to try all day long, but in the end, our opinions on what sounds good doesn't amount to a hill of beans when it comes to what sounds good to you.