el chido <3
Since the revamp I find everything in Inv useful. YMMV. Take taunt Hurl KoB and earth mastery for fossilize and quicksand, or take fire mastery for melt armor and fire blasts, or you can the other...(Name escapes me atm) and get FA for some +Perc and debuff res.
Inv/SS is pretty beast. Enjoy...oh and take taunt and use it liberally.
just some idea's on which powers and enhancements to use on my Invul/SS tanker to make him a good PvP tanker