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drbill:Hey, one of my female buddies (a very accomplished musician) dove double HP 120's, and did so very gracefully. I'll bet Karen would have no trouble diving twin 149's. However, I would...
WallDiver77:For the past two years I have dove LP steel 120s in Cozumel. I absolutely love the things! We can do the Devil's Throat with no concern about being tight on air. I think my actual air consump. has improved because I'm no longer the slightest bit anxious about trying to meet a dive objective when I know I would be skinny on air if I were diving an 80AL. In fact, many of the deco dives we simiply couldn't do.
I've never actually stood an AL80 up beside them, but it's easy to tell that the 120s are taller. What I really noticed was the diameter.... pretty big diff. here.
I also noticed that in weights I drop down to about 4 to 5lbs. (I always take as least one 1lb trim weight with me when I travel.)
Now..... about your 149cf tanks. Geeze, oh pete, those things must be BIG! I'm not sure I'd want to dive anything bigger than a 120. AS it is, I feel like I've got a propane tank on my back!
My two cents! Best of luck with your decision!
Codyjp:hummm, compared to a set of doubles it wouldn't be so bad. also, seems that you would want your buddy to have a similar size tank so you have equal bottom times.