i buy the flat points. In general, I believe longer, feeds better but I like simulating the hollow points I carry. I can also load hollow points without changing the press. i have not changed my 9mm setup in 20,000 rounds and load hollow points and flat point 124s.
My carry is 1 mag factory HP, another couple of gauge checked reloads. I shoot them all every few months, cuts the cost of dong that and if I'm reaching for the second mag. explaining a reload in court is the least of my problems. I'm on the road but if you want what COAL I load drop me a message. I have a matrix of different bullets (HP) that show what I picked and why. They run 100% in sig, glock, browning and whoever makes XDS.