I think the think pad tablet 3 that is coming out soon is pretty good. Although, that one might be a bit out of your price range.
The Think Pad 8 with bay trail has really good specs, and is about 8 inches.
I also used the Dell Venue Pro 8 for a few months and that one was really great for me too. It should be within your budget for sure. I only returned it reluctantly because I decided to wait until Cherry Trail processors come out, but besides that, it did everything my laptop could. It had the full Windows 8 OS as well.