AFAIK the sammy's are the cheapest anyway.. They have more data per platter, so use less platters, bringing down costs.. The higher density then means faster speeds..
You wont regret it, i did my research before purchasing
for storage u wont see a big differnce, also becuase there is 330GB per platter (i think) it wont switch platters so much and that will increase life spam and quilter.