My first 9mm was the Ruger P95. I have shot a GLOCK 19 and Beretta PX4 Storm. They all shoot very nice, but it is how the weapon feels in your hands is the most important. What I did was went to several different shops and handle many different types of guns and calibers before I purchased the Ruger.
I like both the beretta 92 and px4. They both shoot well. Also the Springfield xd or xdm are good. Plus glock 17. I think the m&p 9 feels better in my hand though. That's about all I have tried.... Personally I own a px4. Good gun, only ftf was when someone else was firing it (weird) but otherwise it's great and it looks nice too