Thanks for the input.

I'm liking the multiple effects rift is currently giving me, when running max aux for sniffing BOP's out it does 50+ power drain and pulls them out of stealth. I also find dropping it on a target just before my high yield torps arrive has a good effect. Not tried gravity well yet, am only considering that as I'll have the ability to train it if I go for the full 9 for improving the rift.

The RSV points,, does taking the efficiency boxes improve aux/engine etc power or just derived skills?