You mean LiCoO2 vs. LiFePo4..... LiCoO2 = 30% more energy density but 100% more smoke......That's why I'm waiting for you to work out the kinks on a LiON battery system! Then I can hire your design/build services, and you can live aboard while you do your work!
Not looking for the "Dreamliner" pyrotechnic option
BTW I thought you had GEL's...?