used mac book pro

I need to buy a used macbook pro that will allow me to use a supported version of MacOs and Keynote for at least a couple of years. Preferably 13 inches and with HDMI output. I have tried to come to a conclusion for myself, but reading the latest comments about the countless problems that...

My current A1286 mid 2012 15" 2.6 i7 quadcore 16 GB 2TB SSD recently lost the screen function, so I am trying to replace it. If that does not work, I was thinking to buy a used replacement macbook without spending too much money as I need a 2nd screen next to me Thunderbolt display. My budget...

I need to replacement of my MacBook and need it urgently for work reasons. My budget right now only can be either a mac book air 2017 or a mac book pro 2015. I have never used mac book airs before...but obviously it would be newer...but which is a better purchase if the price was around the...