Go for the Intel G2.
If this was going into a laptop with no second HDD bay, I would go for a 128 gig SSD (Opps that's what I did - 80 Gig G2 in I5-750 and a 128 gig Patriot Torqx in Laptop). Putting it into a Desktop, you should not need the extra space on the boot drive.
Also, need to find out what controller is used in that G-Skill, looks like an older model and may be based on the Jmicron controller - If it is dump it!!