I've got quite a few interests in older rock/metal bands. Specifically being hard rock, metal, heavy metal, thrash metal, etc. I like all kinds of music because I just love music, but I prefer any of those listed. For specific bands, I like:
1. Megadeth - My all-time favorite band. A heavy metal/thrash metal band formed in the early '80s, and it has had a huge rivalry with Metallica ever since the band began performing. The lead singer and lead/rhythm guitarist of Megadeth was the first lead guitarist of Metallica, but was then kicked out after doing crazy stuff because of his alcohol and drug addictions. o3o
2. Iron Maiden - I don't know much about Iron Maiden, but I just like their music. XD
3. Metallica - I'm not so big a fan of Metallica, and that's for no apparent reason, really. Some of Metallica's songs don't really pop out, and a lot really have no meaning. Megadeth's songs usually have a meaning and tell a story. That's what causes the rivalry between them.
4. Black Sabbath/Dio/Ozzy Osbourne - I'm not saying that they're the same (although Black Sabbath and Dio are very similar, with almost the same band lineup), but I like them pretty much the same. I just really like Black Sabbath, Dio and Ozzy Osbourne, and they sort of pioneered metal, so I just have to like them for that. :P
5. Judas Priest - I really have no idea about them. But, they're music is quite good.