For one of them, I would definitely choose Raptors. If you at least get one rare from Raptors, you will at least get 20k (Mim) and can get about 125k (Rex Sweig and Impera Sloane). In addition, their uncommons are likely to bring you a couple thousand clintz each and their commons are slightly expensive too.
As for the other clan, I'm kinda unsure about which is the best, value wise. I would say probably go with Frozen, Riots, or Vortex because they have some pretty expensive characters in all rarities, but of course there are characters like Qorah, Mikaal, and Farman that can be a little upsetting to get. I would recommend looking at the character lists of the clans you are considering and comparing their relative prices to see what you think the best decision is.
I hope this helps and if you can, post your pack results for us to see! Best of luck!