gibson les paul junior amp

Need help finding the right amp for me! PLEASE?
Hi all, Currently I have a Gibson Les Paul Studio, I have saved for years and years and I love it! I have a Fender Blues Junior. What I want is to get a better amp that lets me do more than crunch blues aha. I Love Rock and Metal so it is not ideal. The smart money was looking around the 300-400 range as I have 200 and then if I sell the Blues Junior, which could fetch between 100 and 200. Expresses the desire of the tubes, but no one really knows Please amplifier Please help.
Try http://www.guitarampkeyboard.com/ is a good site based in the UK, and bargaining, I have all my equipment here, amplifiers, low (I'm a bassist), pedals, etc. Just listen to bands / artists who can use a particular type amp sound you like, then what is and find one on the above website. Also price range (perfect for what you ask)! So yes, try! Hope this helps!
Gibson Les Paul Jr Historic Reissue-Reinhardt MI-6 Amp