Flatto
12cfm will keep you out of trouble for most things and the advice you got about high air useage tools is right. Sounds like the unit your eyeing off will be fine.
Just to throw in my two cents.
I bought a cheap china spec 17cfm compressor for $750 over 10 years ago.
It has never had an inch of love in its life and it still goes like it did new. It runs everything fine, has plenty of pressure and I still reckon it pushes the 17cfm free air delivery it did the day i bought it. I recently ran two blow guns off it for about 4 weeks straight and it just took the abuse and kept going.

Sure a fancy brand compressor (westair, sullair, atlas copco etc) are much better built but for the money, go a cheap chinese made unit and get a 17cfm unit. You wont regret it.
Plus, I personally dislike Stanley tools. Their after sales service (Stanley that is) is crap, and if you want to return "lifetime warrenty" tools you will need to wait weeks for them to get back to you. And they own kincrome too.