The new (December 2010) issue of Shooting Illustrated (NRA's newsstand magazine) has an article entitled: Skinny to the Nines.
They test and compare:
Kahr PM9
Kel-Tec PF-9
Rohrbaugh R-9
Taurus PT-709
Walther PPS
The analysis of each is pretty short, and they don't purport to choose a winner, but...
If you look at the "Shooting Results" chart, the following jumps out at you -- the R-9 had better 25 yard accuracy than any other gun in the test!
Now that is a nice little accolate for the pup!