Originally Posted by mikeler
Go as light as you can for your shoulder but as heavy as you can to protect your elbow. Extended will be a little more harsh on the arm than standard. Head light is also good but MP or OS should not matter all that much.
I had no issues when playing 28". Maybe it was the very HL balance?
In the end, the only thing a new racquet will do for you is make you suck in a different way.