Right now I'm using a Markbass 500w head with an Avatar 4 by 10 eo and it's great. I play country and classic rock. Don't need a lot of volume, but a nice, deep pop is necessary. Just too heavy for this old guy.
I'm 71 and still gigging 15 times a month or so. What combo gives me a good sound and light weight? The Fender Rumble 200 and 500 come to mind, but I'm not hesitant to spend some money if need be.