I did a lot of research before buying my ABG about a year ago. I had wanted one anyway for situations where I wanted to play my bass but using electric was not possible or preferable, or when I just want to play quietly but still hear the tone, but when a few of the guys in my band wanted to do an acoustic trio with vocals, I took the plunge.
Like with any bass, it has to feel good to you, as well as sound good. In my budget, I narrowed it down to the Ibanez AEB 10E and the Fender Kingman. I liked the sound of both, but the neck of the Fender felt great to me (actually has a fender electric jazz bass neck) and the Ibanez was too thick for my taste. I have to admit, it's not super loud, but I knew that to be true about most ABG's in general.
It's great for practice and out around the campfire or at somebody's house when I don't want to drag equipment around and/or when friends are playing acoustic guitar.
For performing, after talking to a number of people who have gigged with ABG for years, I found that pretty much everyone uses some kind of amplification with the ABG anyway, usually a small acoustic or practice amp. I already had a 15 amp Fender Rumble practice amp, and it works great with the ABG. The onboard Fishman active preamp does a great job and sounds awesome plugged in. (It really sounds great through my Ampeg PF 500 and SVT 410 HE

)
I put black nylon tapewounds on it, and love the feel and sound. They go for $499 at GC. If you have not already, give one a try and see how you like it.
Good luck!