I do talk-therapy, but it's structured trauma-focused stuff. V helpful.
But the treatment you need depends a lot on what your personal experience of ptsd looks like, and I don't think any one form of treatment is necessarily the answer.
Eg. I take a cocktail of different types of psychtropic meds (anti-dep, mood stabiliser, benzo prn, a-typical anti-psycho's - took years getting that right and it's always getting tweaked as I change).
But I couldn't have done without all the cbt I did, the stuff I borrowed from dbt (esp distress tolerance and mindfulness), the meditation and yoga classes I stuck with (and I'm not a tofu and chai tea kinda gal), behavioural focused work, re-scripting was awesome, grounding is an every-dayer, I've got exposure stuff going on...
My attitude to therapy is I'll try pretty much everything. ECT didn't work for me, but I've seen it change lives for others. Tms may be on the cards if I get another suicidal patch - magnets on my head? Weird, but I'll have a crack...
I couldn't honestly pick one form of treatment and say "Yup, that's the magic wand". Some have helped more than others - like my depression is major and cbt is critical there, and my seroquel has saved me from many a flashback experience gone bad...
To be honest, if I had to pick just one to focus on, it would probably be good old lifestyle work: diet, exercise, sleep, & meaningful daily activity.