i love my D18

they sit great on my back , trim is great - no problems at all . as for the weight issue - there is a 6 KG difference from my D80's i when i dive the 80's i add about 4KG and use a SS plate so the total weight is the same .
as for the wing i use them with my Evolve 40 and its great , the D18 allows me to do the deeper stuff with enough gas reserves .
here you can see the evolve 40 with the D18 +a bottom stage+ 2 deco tanks
Nimrod