Liquid or Powder BCAA's?

[xlxBigSexyxlx]

I don't wanna go with capsules. So whats better liquid or powder? And what brand?

I was looking at SciVation Xtend, which is powder. But its also $50, and Im not sure if that is overpriced or what. Here it is if you wanna see it. http://www.bodybuilding.com/store/sv/xtend.html

Im just loooking for the most bang for my buck basically. Thanks

[xlxBigSexyxlx]

Also, whats the difference between BCAA's and just Amino Acids? I know BCAA's are a must, but amino acids? Is it worth the money throwing that in as a supp?