Hey Maz,
I agree with Terry and Kathy (not surprisingly 

).  Anyway, I initially tried Lyrica and it did not agree with me--I became hypersensitive to pain.  Even if my wife touched my legs or the sheets touched them it was awful (I compare it to diabetic peripheral neuropathy).  Needless to say, I stopped the Lyrica and tired Topamax.  Topamax works wonders for a great deal of people.  However, it's referred to ask "Stupidmax" in the hospital because it really affects cognition.  I had extreme trouble with easy things like word choice.  I couldn't name basic things--I would just have to point at the object because I forgot the name. 

  Well, this didn't work well with school...imagine that?!?
Now, I'm on 60 mg/QD of Cymbalta for the neuropathic indication and I think it helps.  However, I started all of my "pain" meds at the same time so it's truly hard to tell if it is really working out of the pain pill cocktail I currently take.  I'm sure it is working (even if I don't really notice) because it works on norepinephrine and serotonin receptors in the brain.
I would definitely give Topamax a try--not all people experience side effects on it.  As always, consult your treating physician(s).