Hi, did you make a decision? I had the same choice when I saw the upgraded
G60jx on Best Buy. I had purchased the vx 10 days ago. Searching Best Buy's web site I assumed they had a 15% restocking fee but I called the store to ask anyway and they said they don't have that fee for returns anymore (there is a 14 day return policy). So anyway, because there was no restocking fee I returned my
G60vx model and got the jx instead (I had paid $899 US for the vx and the jx is $999). The exchange was hassle free at my Best Buy store.
You already know the differences. I liked the 500 gb hd vs 320 gb (still 7200 rpm), Core i5 and upgraded video card (360m vs 260m). Dimensions appear the same and physical appearance is the same. From the Best Buy specs, the jx is 7.5 pounds vs 7.2 pounds for the vx. The screen resolution is still 1366*788.
The fan on the left side pumps out less heat with the
360m vs
260m. I guess that will change once I make the system work more. I think the fan is in a good place even though I'm left handed. I've reinstalled Crysis but not played it yet. I did not play much with the speaker settings when I had my vx but I thought it was too quiet. The jx seems louder (but again, I have not played with any settings beyond volume). The backlit keyboard is still there.
If you buy the jx I'd recommend logging on to the Asus support site and picking up the newest version of the Recovery software. Search their support site for "AVRecovery" (or you can find it on the support section for your model). I tried twice to create the recovery DVDs and got locked up. I called ASUS support (24 hour support) and they recommended that I download/install the newest version of AVRecovery. After I did that, I got through the recovery process/burned the 3 DVDs. The vx model came with a recovery dvd and a couple other dvds but the jx model did not come with any dvds (and no recovery dvd is available from ASUS they told me -- although it is on the hard drive partition).
The system has the usual amount of BloatWare. One new item is "Best Buy Software Installer" a program designed to manage software addons. I Googled it and then deleted it. I don't think the jx comes with that Linux based quick startup ASUS software. At least I did not get it at startup on the jx like I did on the vx.
The jx Windows 7 performance scores are:
Processor: 6.7
Memory: 5.9
Graphics: 6.8
Gaming Graphics: 6.8
Primary Hard Disk: 5.9
Other than my initial problem creating the backup DVDs I did have the system give me the Blue Screen once today. I was in IE8, had created a new folder and then it hung up. I don't blame ASUS for that though.
Let me know if I can answer any other questions, but basically I'd say the vx and jx are the same laptop with the 3 noteable upgrades and other minor ones.
Peter
I highly recommend this laptop to anyone looking for a laptop that is capable of maxing MW2 with 4aa, BC2 runs on max settings with 4aa at about in the 40's which is definately impressive! I have yet to test out the one and only Crysis on this but by far this laptop is not disapointing! The Core i7 is stock at 1.6GHz but in Turbo mode can go up to about 2.8GHz and with Asus's own Power4Gear allows you to overclock it to probably about 3.0GHz! The cooling in this thing is absolutely amazing as well! Much more aesthetically pleasing with the stealth fighter inspire designed laptop! The speakers are much louder then the previous G series and it also has a built in subwoofer at the bottom of the laptop that I haven't really bothered to check out yet. 
