Narcotic strains

Which strains are particularly good for pain relief? I'm guessing mostly indicas, I sure know that some L.U.I. I got that was going around worked wonders. My first grow is coming to an end and now and I'm looking for new seeds. I'm going to grab either northern lights or ak-47 just because I've enjoyed them in the past and know my friends have too. I'm going to be doing a small SoG next, would any of the strains good for that like top44 and thc bomb work well for what I need too?

Best pain relief strain ive tried would be Purple Kush but you can't get that in seed form except a hybrid from Reeferman which i havent tried. Check this one out.

Afghan Kush Seeds - cannabis seeds

That looks great, price is good too. All my experiences with kush have been awesome and they're amongst my favorite strains to get. Is that better hindu ro master kush or all they are similar?

I havent tried it yet but it does look good, i think you can get fem seeds of them too. I have grown Master and it was nice ..heavy body clear head. Smoked OG & Purple Kush. OG the best all around imo. I think Hindu is the same as Master just yields less but finishes faster. Maybe try Reeferman's Mazar I Shariff.