So that's 32gb of Vengance at 1600Mhz Or 16gb of Preadator at 2666Mhz
qould you go more RAM or Higher Freqs?
More aboutspeed question
If you need more ram then 32gB is the one for you if you user less than 16gB of ram then 16gB is the one for you. If you use less than 16gB then the 16GB cards at 2666MHz is much better than 32gB at 1600MHz.
I say predator. The higher frequency the faster everything will run. I rarely use over 8GB myself so I don't think you need 32GB.