Wow. I was just poking around and thought this topic might help me a little. I haven't taken a lot of time for comparison builds, I don't spend a lot of time around GFAQs anymore to be up on common knowledge...
Now I don't feel bad. Helios won't kill something outright? That's a joke right?
TC, take anything here with a grain of salt. I'm certainly no regular around here, but there's contradictory info withing one page of advice. Some of them seem to be guessing at stuff they've never even tried. Good luck, I wanted to play Maya because I like skill based builds more than just upping my ability to shoot. Sadly they relegated the Siren to a support roll.
The advice on the Cat build doesn't seem bad. Personally I just think it sucks building an elemental skill character to just shoot a lot, takes away the point. But that's on the devs.