I ALWAYS load at the low end for handgun rounds with one minor exception: .357 Mag for use when fishing where black bears outnumber trout.
I have at least one box of the FBI Load for self-defense. One box will last me many lifetimes.
High velocity ain't necessary for punching holes in paper and plinking in the Eastern Sierra.
Low end loading makes shooting more fun, especially for kids. (They don't 1000 FPS from 750 FPS.) Just as important, low end loads reduces stress on handguns.
I've used Power Pistol. The ONLY reason I prefer it to Unique is metering. Unique meters like corn flakes. Hence, I've substituted PP for Unique.
Hence, to answer the OP's question: I like PP. It is excellent powder. But there are lots of excellent powders. One of my favorite .38 Special loads is 158 grain LSWC (seems to be very accurate bullet) with 3 grains of Titegroup. Don't quote my powder charge. I'm working off memory. Regardless, it's minimum load. Titegroup is excellent powder for target and recreational shooting.
BTW, when Eastern Sierra trout fishing, kids seen to find shooting to be fun intermission between bites. My kids can go through a thousand rounds of fun in one intermission. This season, I might have to buy a 5-gallon bucket and fill it up with .38 Special ammo.