yup, E is the newest series out in A7N8X, go get it so making it:
Asus A7N8X-E Deluxe , addition in E- Series is, that they come with Wi-FI slot, means you can share your internet connection to 32 other Wi-FI points (i think its 32), as if you see my specs, I have mobo with E as well, E's are newest.
kingstons are the best u can get in DIMMS..they have superior components and thier soldering quality is also good..
i am the proud owner of one 256 MB module..even better would be a corsair module,the king of kings..if u want to buy a cheaper and stable version,go for hynix or kingston..