John_B
Grasshopper
I picked the FSR but only because you didn't list the Flathead FST, which is what I dive (Apeks XTX100). The flathead has a low profile and side facing ports on the first stage. I'm not a fan of the radial design on first stages where the hose ports are mounted around the perimeter of the first stage, I don't care for the hose routing that causes.
My dive buddy switched from the MK25s to the MK17s and couldn't be happier with them. The MK17 would easily be my second choice.
My dive buddy switched from the MK25s to the MK17s and couldn't be happier with them. The MK17 would easily be my second choice.