I've got two 5" 9mm Pro's that I bought this year, one for range/IDPA, and the other set up for HD with SF X400 light/laser. Prior to this I was shooting CDP (Les Baer) and ESP (Walther PPQ), I didn't own a SSP pistol.
Both of mine have been reliable, the triggers are better than a stock M&P. Both of mine started rough, but smoothed out and are now what I consider to be "pretty good". I did a little polishing, especially around/on the FP block. They're not 1911 good though. Both of mine are 2013s, and the accuracy is good with my 147grain reloads. With the 147s the recoil is mild, pretty easy to run plates, the weight up front keeps the muzzle down. The ergonomics are pretty good, I'm running the medium back-strap on mine. The slide release looks small, but it works, and its positioned just right for me, zero issues with my standard thumbs FWD grip unlike my PPQ which caused me to modify my grip some.
I may or may not go the APEX route with my range "Pro", I'm going to continue shooting it as is for a while. I did change the sights out for Dawson's; FO front, and adjustable rear. The folding trigger bothers me, except when I'm shooting live, then I don't even notice it.
The only issue I had initially was finding magazines, but now have 11 of them after buying 2-4 at a time when I could find them. For a holster I went with a Bade Tech, which is my 3rd holster from them, zero complaints with their stuff.
From what I've read, the 9L has been discontinued for the 5" Pro, so you'd be looking used to go that route.
Chuck