Several months ago, I purchased a $20 ankle-length fastskin (it has a small defect in the seam, that's why it was so cheap). My intention was to use it for pool racing. Meanwhile, my Blueseventy pointzero, which I use for open water swimming, has become too big and has a small tear.
My question is, is there anything about the Blueseventy that makes it preferable to the fastskin for open water? Would a fastskin work well as an open water race suit too?