I'm curious if there are any other Psy/Fire blasters out there. Mine is currently my main toon and the one I plan on making my badge hunter. The biggest knocks on Psy blast are lack of AoE and damage to bots, especially in higher end content, but /Fire helps fill those holes.
Psychic Wail is obviously great when it's up, but my favorite chain might be Psi Nado from distance, run in, and then any combo of FSC/Combustion depending on mob density and Burn at a boss's feet with 3 damage procs in Cauterizing Aura and a set of Obliteration in Hot Feet. Though I've considered slotting damage procs in Hot feet as well, not sure which I'd prefer. With Psi Nado's inherent KD + Ragnarok chance for KD, KD proc in FSC, and KD proc in Hot Feet, few things are able to get to their feet before they are dead. TK Blast and Psi Lance on repeat to pick off bosses.
It's great at 50 with T4 Incarnates and the like, but it really shines in lower level TF's as well. Psi Nado, Combustion, and FSC are available relatively early and provide a wealth of AoE damage that can be lacking in very early levels.
Just wanted to share my thoughts and would love to hear other people's experiences as well!