Abe,
We have been using Appollo Bios and love them. We have had them for ca. 75 dives and have never found them wanting. I do not know what you are using now, but we had Quattros and they served us quite well, but they are now out to pasture. The difference in our opinion has been comfort: they are more comfortable on our feet and they are more comfortable u/w. We also found that we have fewer--actually none--leg cramps on that first dive of a trip; with our Quattros, cramps on the first dive were almost guaranteed even though Barbara and I exercise nearly every day (but, I confess, not by swimming).
By the way, we have used them in surge, current (weak and stong), shallow dives and deep dives, swimming dives and drift dives. And we have not been left behind, burned up excess air keeping up with Joneses, etc.
However, I will tell you that we have met folks who have tried them and did not like them. Soooo, try 'em first: most dive shops around here let you use them in their training pools. Maybe they will in your area also....
Joewr