1) Well, the Value RAMs have no heatspreader (not important if not OCing your RAM) and have a default timing of CL 11 when compared to the Ripjaws with timings of CL 9, which makes Value RAMs a tiny bit slower than the Ripjaws.
2) The G2 Versa looks like an adequate case with several mounting locations for 5.25'' and 3.5'' drives and good GPU clearances. However, I must warn you that the Versa G2 seems to lack a delicated space behind the motherboard area for cable management and you may have to stuff your cables behind the 3.5'' drives, which makes cable management potentially messy. I feel that this is a big no-no as relatively cheaper cases like the Aerocool Vs 92, which is sold at $65 (SRP for the Versa G2 is $69), has a delicated area for cable management (A bit small though, but better than nothing.) and thus having no delicated cable management area makes the Versa G2 a relatively bad buy as most cases at similar price levels have a area for cable management and thus making cable management easier. Of course, if you are the type of builder that simply dumps the unused cables into the case and heck care airflow and asthetics, then I have nothing to say.