What to buy...5.45 vs 5.56 vs. 7.62?

[Peace Sells?]

Ok guys, I didn't get to buy any ammo before the election results got in, (sucks when everybody in your company gets their checks last friday, I usually get in on saturday, but my check was lost and I didn't get a replacement until today!) Anyways since the prices have been raised at least 20 bucks per thousand and the 5.56 deals that included shipping are gone i.e-weidners, what should I do. Buy 7.62 x 39 for my romy build which I haven't started. Get more 5.45 (have 1 crate) from Rguns before the price increase at the end of the month for another rifle I yet do not have. Or just break down and buy 5.56, seeing that I only have about 360 since I took my new rifle on the range and broke it in with about 140 rounds. I have a feeling 5.56 will come down as soon as this war ends, and I don't think Obama is that stupid to enact an ammo ban anytime in the near future, but I do see a limiting of Russian products if tensions heat up. What to do...what to do?