Stats for the patchFollow

Hi

I was wondering if you guys could give me some advice.

I just dinged 70 a couple of weeks ago, and have grinded honor for the patch since. Now im wondering, should I buy the +spelldamage OR +crit/+spelldamage gear?
My thoughts:

I probably should go with the +spelldamage since its the most common used gear and build for warlocks in pvp. BUT I also raid a bit, and it could perhaps be fun someday to go full out destruction and try that for pvp as well. And if that day comes, then I would be very pissed at my self that I have taken all the +spelldamage gear and no crit, cause then I would be a bit useless as destructions.

Advice? :)

/frederik