I heard these guys at a RenFest a few years ago and immediately bought a couple cd's. I probably would have bought more if I'd had more money. It's been tough finding them where I live, though.
I've been following them for about 10 years now. I've always been amazed how Leif can keep it all together with all of the lineup changes. These guys were my introduction to celtic rock and I am forever thankful! I think their best stuff was circa ~Balance, but I am a fan of heavy guitars and that's what Todd Evans brought to the table back then. Definitely a great time live.
I've seen Tempest live 4 times this year - they are AWESOME! They have tons of energy, and really have fun playing together; plus, they are super nice people.