Either of those will only save you 25 bucks, and the packaged PSUs are crap. The PSU and case I listed up there is a combo, but they don't come together by default, hence it will be a better PSU less likely to fail.
Also, that combo I got you has 35 bucks in rebates, which makes it 10 bucks CHEAPER than either of those you posted.
If you absolutely have to, we can price out a lesser CPU, but the package I got you up there is really nice.