OK,took her over to my neighbors chrono along with my 60", 53# @ 28" MOAB
My new bow is 64", 52# @28"
These were not measured draws,but had 3 guys shoot thru and averaged.
These bows shot within 1 fps of each other overall
525grn arra- 181 fps
702grn arra 160 fps
The 64" bow might have been very slightly quieter,not enough to be sure.
On a side note,last winter with a measured 28" draw,the MOAB shot the 525 grn arra 184 fps
Remember this was no kind of accurate test,just an impromptu session!!