[font=trebuchet ms]I've got a 120 Watt Ampeg VT-22 that I rarely use 'cause I can't turn it up past 2.
I've got a 60 Watt Ampeg VT-40 that I can use 'cause it has a Master Volume that let's me turn it down enough to avoid hurtin' anyone.
For jams I usually use a 10 Watt Ampeg G-18 (transistor!) amp 'cause it sounds amazingly good without blowing out the windows.
First, you gotta get great [u]tone[/u].
Then you can worry about whether you're loud enough.[/font]