| Never tried either KISS, but Dolphin, MK16, YBOD and PRISM.
There are differences between each of them. The MK16 breathes better than the Dolphin, I asume because you don't exhale into a full bag and activate the OPV all the time. Also, the scrubber designs are way different and have part in it.
The PRISM breathes nicer than the YBOD, could be the different scrubber design or different DSV.
But either ots lunged CCR has considerably lower WOB than the backmounted ones. Also, hydrostatic differences when changing position are much almost negligible, while turning on your back with the 16 makes you look lile you're eating its tanks.
The only advantage that the backmounted lungs have is that they're encased and hence protected. And your chest is free of CL and assorted hoses. For diving scenarios (squeezing through caves, handling large camera housings etc) it really is the way to go, but I wouldn't trade in the easy breathing unless there is a good reason.
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Cheers
Stefan
"Political Correctness is a doctrine, fostered by a delusional, illogical minority,
and rabidly promoted by an unscrupulous mainstream media,
which holds forth the proposition that it is entirely possible to pick up a turd by the clean end.!"
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