Nothing does at that weight. If you wanted to add lead, the Babolat Pure Storm Team is close. I got it to play like the Blade at 336 grams.
The blade flexes in the throat. But the hoop is stiff. So mishits will bother your arm (potentially).
If you can handle 18x20, the new Blade 18x20 may be softer according to the TWU frequency charts.
Please help TT Member BruceD get a wheelchair so he can play tennis again - http://tt.tennis-warehouse.com/showthread.php?t=496820