Samsies. I love my 2012 i7 MBP. I did the same upgrades as you, super easy and it runs everything I need! To the other commenter - upgrading the hard drive to a SSD is easy, you just need a mini screwdriver and the new hard drive. Protip - I put a small piece of foam in when I replaced my HDD because the solid states are so much smaller than the spinning drives.

We should start a group of happy 2012 MacBook Pro users. Let's just say that I've been eligible for a work upgrade for 2, going on 3, years now. :)

Unfortunately, I've lost Bluetooth at some point. I've meant to debug (and replace the card if needed).

How do you upgrade like that? I have one of the same models.

The RAM involves taking the bottom off and shoving in some more sticks. Officially this can only support a maximum of 8GB but I have had no problem with 16GB.

For the hard disk, it is fairly trivial too. Follow iFixit's guide:

https://www.ifixit.com/Guide/MacBook+Pro+15-Inch+Unibody+Mid...

I went with a Samsung 850 EVO 1TB.