You'll probably want a 16x19 string pattern, something a little flexible, 98-107 sq. inch headsize, weighs 11 oz. or higher strung, and headlight balance.
The string pattern is more open than a 18x20 and will help with topspin and feel. Flexible racquets are more comfortable than stiffer ones. A 98-107 sq. inch headsize is a good transition from your hyper hammer if you want to improve your game. A lot of racquets in the 10 oz. range are really light, unstable and can hurt your arm... heavier is just better overall. And a headlight balance makes it more maneuverable for volleys, serves, groundstrokes... head heavy racquets give a lot of power and less control. I'd take a look at Prince Graphite Classic Oversize (POG), it's a classic player's racquet.
Hope this helps!