I would stick with the first one (Antec Earthwatts).
1.) It is 80 plus bronze.
2.) It got excellent reviews on newegg (for a PSU)
3.) It is adequate for your system (enough power, connectors)
1/3 of the people on newegg said the Rosewell 720 was garbage, but some people were satisfied, maybe you would be lucky and get a good unit. In my experience it is kind of like gambling, you get what you pay for with the higher capacity inexpensive PSU's.
I'm not much of a gambler. Thanks for the info, looks like I'll go with the Antec Earthwatts!