Double 100's are not my first choice because I am long in torso and they are nose heavy and more difficult to suit up on a bench. One twenty's trim me perfect and my Faber LP85's trim identically with a 4.5 pound tail weight, no thermal protection (3mm or less) I forgo the tail weight. I ounce had all kinds of doubles, MP80's, LP80's, LP108's, HP100's and HP119's. Sold them all and standardized on LP85's and HP120's... My weighting is all the same and dialed in, everyday is groundhog day for trim and my dive and gas plans are canned. YMMV, just what I've found