[Stiv X]

I was saving for a SP3 before I went to Best Buy and played with the S3. I was so impressed with it, that I pre-ordered the S3. Anyone the fence about this device should go play with one before hating on it. So, far I am loving the S3. I am not much for gaming on the PC as I have the XB1. So, this thing is great. The Best Buy model I played with was 2Gb/64Gb. I did also buy the 4/128 model, but only because I feel if I plan to keep this for a long time, 64 Gbs of storage was not enough. I think 2Gb RAM is all the average user will need.

[xTmX Korrupt]

I am on the 2GB ram model. So far it runs like a champ. I use it for work, web browsing, and the occasional game. It has handled everything I have thrown at it. If I need to buckle down and get some serious work done, I have a desktop that does specifically that.

[web1b]

I got the 4GB model in case I need to use memory hungry apps while multitasking
I played around with the 2GB model at Best Buy using IE and the preinstalled apps and ran fine even with many IE tabs open plus a couple tile apps. There were no heavy apps installed to test with.
Chrome often needs more RAM and CPU than IE, so if you love Chrome with tons of tabs open, 4GB is probably better.