Thanks for all your replies!
My Laptop also has 4GB of RAM and i rarely pushed it over 65% of usage in the 4 years i own it, so i think i won't need more. Maybe i just have to change my habit of having 15+ tabs open in Chrome at once, it uses like 1.5-2GB of it.
On my i3 desktop i have 4gb of ram. at any one time, i have more than 15 chrome tabs open :X (bad habit, i know) i find my usage at 3+gb ram very often. so yeah.. but 8gb is pricy in my opinion and i know i most probably dont need that much if i just close some tabs...
I
totally understand that usually finances are the limiting factor in a decision like this. And the SP3 is going to be an awesome machine for you, whichever model you get. The cheapest model of course will possibly require you to make some concessions, such as having more data stored on a SD card or external drive, or like you guys said, changing your usage behavior.
But just in the interest of playing devil's advocate...
... technology, and life, never goes backwards. Growing up in the 90's, I remember our PC had a 40
mb hard drive, yes megabytes, not gigs. And as storage grew and got cheaper, the applications that we used quickly grew as well. Now you can go down to Wal-mart and buy a laptop where 4gb and 6gb are the standard amounts of RAM. So the point is, whatever you're doing today, is only going to continue taking up more room in the future. So on the one hand I say, the SP3 is a premium device, and it's somewhat unfortunate to hear someone say that they're going to buy one that meets their immediate needs.
On the other hand though, I completely understand as well "this is my budget and I'm sticking to it".
Best of luck to you guys, you will sure enjoy your SP3's!