I have narrowed it down to ibanez ts9, fulltone ocd and fulldrive 2 mosfet (i am not too keen on the mosfet as i prefer simplicity in my pedals). Which one should I get? I am looking for a ac/dc, srv, bb king tone and I'll be using the clean channel of my SS amp (i know they are meant for tube amps but i can't afford one right now).
I've only owned the Fulldrive 2 Mosfet, but I can't say anything bad about it. It's not very hard to use. It's a good transparent overdrive as well.
All of our days are numbered
I’ve taken some comfort
In knowing the wave has crested
Knowing I don’t have to be an exception
If you're going for a tubescreamer style pedal, I recomend my own, the T-Rex Moller pedal! It's fantastic, with a very transparent overdrive, and can get you hard crunchif dialed so. It's only drawback is the price, at 220€.
My Signal Chain:

Gibson 1974 Les Paul Custom
Vox AC-30 cc2 combo
JAM Pedals Tubedreamer +

Nigel will always be 1 louder than you!
It seems that the Fulltone OCD is a very popular pedal. I might go with that one. But this all really depends on what floats your boat, not ours.
My Gear

Schecter C-1 Plus (Seymour Duncan JB bridge, Seymour Duncan '59 neck)

Bugera 333XL 212 Combo

MXR Carbon Copy
MXR ZW-45 Overdrive
BBE Sonic Stomp
Boss TU-2
Boss NS-2