I bought a Crate CA 6110D used a year ago (I've been playing acoustics for over 40 years, but I'd never owned an amp, so I thought it was time). This unit puts out 60 Watts from a fairly compact package that weighs less than 40 pounds. I have a 2000 Taylor with a Fishman barn door, and a 2007 Taylor with the Expression system; this amp sounds good with both of them. It's also dual channel, so you can plug a mic into it, as well. 10" woofer with a piezo tweeter. For the noodling around I do, it serves my purposes.
But, as Captain Jim said, it depends on what your use will be, how big a space you need to fill, how many effects you want built into the amp itself, etc.