With such a wide variety of styles & genres, it would probably be best to look into modeling amps. For example the Line6, Fender & Peavey all make great combo amps that have a wide variety of tones & effects all built into one box that has the amp & speaker contained!

And all 3 companies have amps in various wattages to suit your needs. The best thing to do is head down to you local music store & try out some new gear! :)

Hope this helps. Best of success!