Personally, I have only played Psi-based characters from start to (the current) finish because they seem very strong. I maxed both Will and Intelligence and max all Psi skills + Mechanics/Electronics/Tailoring for crafting, and intermittently put points in Lockpick/Hacking and the other two crafting skills. In combat, my character has access to AoE CCs as well as the ability to chain stuns/fears/disables on single/few targets, and most enemies die to a single crit from Neural overload, empowered by Mental Breakdown (which can be cast as an AoE, with Locus.) I imagine that the new buff to Telekinetic Punch + Opportunistic attack + the shatter effect from Cryogenic Induction will result in a similar outcome. All this is possible with moderate int to craft a crit chance/crit damage Thought Control headband (or the money/time to buy one.)
As I haven't really played many other types of characters to suitable depth I cannot comment on how it compares but a psi/int-based character is incredibly fun and rewarding.