15" MBP SSD upgrades

[michaelsviews]

I have not found anything on this and hopefully the wording is correct.

I've been looking for a 15" refurbished MBP and you see years 2012 - 2014, bigger the processor maybe more power being used, but then again if there isn't software demanding the processing power then the system should be running at a minimum. Point of this is between those years was one better than another? Also which one was easier for upgrading the HD

Thank you

 

[maflynn]

Also which one was easier for upgrading the HD

The retina MBPs do not have hard drives but proprietary SSDs. You can easily purchase and upgrade the 2012's SSD, but not for future models. The only place you may find SSDs for those is on ebay (used not new).