APSand APS is one option. I've also lately heard from some other folks that and are quite a potent stack with N2KTS. There's a promo going on right now in the promo section, so you might be able to get some for free!
never did much for me, and it was hard to take (I don't like dumping powders down the hatch).
Creatine Mono does little for me, but I get crazy pumps and great strength/ with .
I've never tried , but I've tried a lot of pre-wo powders and they all lose potency pretty quickly (tolerance builds up). was the only pre-wo that I could take 1 scoop for 2 jugs worth, and still get the same effect. I really liked N2KTS, it's a potent pre-wo that's better than Jacked by a couple scoops and without the crash
You won't get as many servings either way, but I think the overall effect would be greater.