SH5 is very impressive so far. A few minor bugs, but no major issues.
I just came off the Pedestal mission where I tracked a task force underwater for six hours. I was sure I had missed it since I could see the carrier moving away, then it zigged back in my direction, allowing me a shot. I am now running deep at 170 meters while the escorts track me.
I haven't had this much fun in a long time with any sim. Best $49.99 investment I ever made.
I have played every SH since SH1, but this one is special. It won't take much time or TLC from the modders before SH5 is the new standard in submarine simulations.
...now back to the Med...