At the current time, my favourite 9mm is a 9mm stainless steel 1911 CCO, or a Browning Hipower. 1911's are overbuilt for 9mm and in steel frame will last almost forever. They are very accurate with excellent trigger pull and the weight dampens recoil. Single stack magazine means you are not "wasting space" on a neutered magazine and the 4.25" barrel means no ugly pinocchio barrel. The 1911 and the Browning Hipower are very slim compared to most modern pistols and they are classic guns. I also have years of muscle memory built up on pistols with the same grip angles as these two so I prefer them. The 9mm CCO also allows me to practice with a gun similar to my .45 ACP CCO with cheaper, lower recoiling ammo. With Wilson magazines, you can get non-extended 9 round magazines for CCO and 10 round magazines for full size 1911's (both in 9mm of course)
That being said, grip angles can be adapted to after a few hundred rounds and a few draws from holster, and the Glock 48 is very affordable, very reliable and also gives you a slim gun with no neutered magazines, or Pinocchio barrel.
If I were just starting out again, I would buy either a Glock 48, or a Dan Wesson Vigil in 9mm...either a Commander or a CCO. The Vigils come with an aluminum frame which makes the gun lighter too.
Ultimately, I suggest you try out a number of guns before buying your first. Like most people, over time you will buy other platforms and your preferences may change over time and experience.