I use 15-20 lb pp and the same for fluoro, sometimes.
The truth is, and ive stated it here many times, im often fishing pike with 10-15 lb PP or suffix 832, no leader, in current, shallow rocks
I very rarely get bit off.
I guess im just lucky with that.
I also use much shorter rods than most, a 6'7" medium heavy and spinning reel
I personally find, and yes its sounds rediculous, the heavier I go on line the more pike bite me off