I never really saw Frontier, so I really can't compare, but Savers seems fun enough.
It's nice how it seems to be aimed at an older age group, I don't feel as silly watching it and enjoying it.
Masaru is okay, though his obsession with fighting is a bit annoying. He also needs a new hairstyle...
I think that his mood'll cool down a bit after he starts working for DATS. I haven't seen past episode 2 yet, so I guess I'm going out on a limb saying this. ^^;;
Tohma looks pretty cool. I'm looking forward to seeing him in ep 3.