It really depends on preference. I have never tried the scott punisher, but I will rate the other three for you and hopefully that will help.
Flex from Stiffest to softest: MSP - 8, BCs - 7, Seths - 5 or 6
Fattest to skinniest - Seth (but only at the tip and tails), BCs, MSPs
Sidecut from shortest turns to longest turns: BCs, Seths, MSPs
Hardpack performance (IMO) - BCs, Seths, MSP (that that is only because i prefer a shorter turn)
Durability from best to worst: BCs, MSPs, Seths
When I have been in your shoes in the past I have most loved the Scratch BCs, or brigades or S3 or whatever they will be called. They perform really well all around, still have good energy for a stiff ski, and hold up really well on the topsheet with semi-cap construction and are pretty durable on rails.
Best of luck!
mine are between modern and standard, because the shop messed them up and i didnt want to change it. I originally wanted them at +2 from modern, which i think would be good for everything. but i dont really notice how much father back mine are monted, they are fine switch and slay powder like crazy. so i would mount them maybe +3 from modern, but no more if youre going to ski pow. you mihgt even want them at like +1