I use the Yonex Ultimum RQ Ti 250 - it's supposed to be a "power" racquet
It's OK, but the strings need to be loose (not too loose) otherwise it's hard to hit a good flat shot. If the strings are too tight, the hard pop you expect to hear isn't there, and if the strings are too loose, you hardly hear the pop and the error count is impossible to control.
I like the Dunlops - the one Maurasemo (sp?) uses looks like its got good control. I might get one, but I've used Dunlops before for so long I'm almost sick of the brand.
What Yonex racquets are good for control and a bit of power?