The PSA will have a longer working limb than the PMA at 60" due to the difference in the length of the riser. That said, as smooth as Widows are, the PSA will be a touch smoother. Another consideration is at what draw length? I draw 30" and have an old 60" SAII I bought new back in 97" and 62" MAIII that I bought new in 98". I prefer the feel of the 62" MAIII. That was before Widow started putting phenolic in the MA riser, so my larger, longer MA is actually lighter than my shorter SA.