Happy to report that after several conversations with Thunderpower RC, we now have a Pro-Lite 25 C 2200mAh 6S battery pack. This is a fantastic option for 35-40 sized ships and possibly, twins. Active timer setups and passive.
I also requested they consider producing a 5S 25C, 2200 mAh. Time will tell.
I was told that there is a costly certification process and of course, we have to prove a market. So let's buy 'em. To my knowledge, this is the only source for a 25C other than some hobby supplier from China. My preference(and others) is to stick with 25C rather than 30, 40 or higher. It's lighter in weight !
My very good friend, Robby Hunt, has the 6S and I'm sure he's cooking something up for it.