You don't need to get the s30v version of the vantage, for 20 bucks you can get the select vantage in good old 420hc. I'd go with the Buck all the way. Made in the USA, lifetime warranty also.
"YoMama" nailed it. I have all of the knives you listed in the OP and the Buck Vantage Large is the hands-down winner for me. The Ripple is better than I expected but it's tip-down only and I don't like the pocket clip. The Cryo is ok but it's a little small, heavy, and a tad slippery. I still carry it from time to time because of the color and awesome pocket clip but if I ever lose it I won't buy another. The Vantage, however, would be replaced same day. I'm even considering the Pro model just to try out the steel.
-StaTiK-