I personally do not like them. They are somewhat difficult to play comfortably, and I feel like the sound is too weak and too heavy in the mid-range. If you really love Ovation, try to find a used (or on-sale) Celebrity model. They are a bit richer in tone, but I still wouldn't recommend one for the other reasons.
In your price range, I hear a LOT of good things about the Seagull S6 models. I have personally played one at a local guitar store, and the soundboard was definitely much more alive than comparably priced Fender and Ibanez models.
The acoustic guitar works because the vibration of the strings causes sympathetic vibration in the soundboard (top) of the guitar. Vibration works in both directions. So if you want to know how well an acoustic will sing, tap sharply on the soundboard. If the strings don't audibly start ringing, move on. Next time you're at a guitar store, try it on a $2,500 Taylor or Martin and you'll see what I mean. If you're lucky enough to live near a dealer, try it on a Benedetto or an Eastman and you will not believe what a plank of wood can sound like.