Another in the Sentinel fan club here. I run an Energy/Invul and he is both incredible fun and incredibly strong, with soft capped types defences, hard capped S/L resist, and perma hasten.
Yes, we lose damage to blasters but we gain survivability. Yes, we lose damage to scrappers and brutes but we gain in versatility. And don’t let anyone tell you we don’t have damage as I’ve solo’d AV’s on mine without any -regen, and I’m not tickling them.
Plus, we get access to knockout blow in Patron Pool too, which immediately increases the awesome factor of any toon ten-fold. True story.