Put in a couple fresh water dives today, trialing the Go Sports. Going into it, I was hopeful but not convinced I would like them. As a long time user of Slipstreams and a fan of stiff blade fins for the precision and power they can provide, I noticed the Go Sports being a little bit flexible/softer. Not as soft as Quattros, which I put a couple hundred dives on at one point and then switched to Slipstreams for the increased stiffness. I have heavy legs, and that is big factor in why I was looking at the Go Sports.
Two good dives, I can certainly see them being my travel fins and possibly everyday fins. No chance to test them in current yet, but on a laid back lake dive they were as nice overall as any fin I have used. My kick is 85% frog kick styles, with flutter used primarily in current. Subjectively, frog and helicopter performed to 90-100% of slipstreams and back kick maybe a tad less but good enough (not that I am great at back kick). Flutter was more comfortable, just not yet sure if they can generate the response to a forceful flutter in current that the slipstream can.
Perhaps tomorrow, I can run a test on buoyancy in fresh water with a barrel of water and a collection 1-2 oz weights.