I'm looking for a used MacBook Pro and have been doing some research. I know the models up to 2012 can be upgraded (RAM), I've also seen people say that the 2015 15" models are great because they have a lot of ports, I've seen a few on eBay with the i7 and 16gb for ~$300. I've also read that repairs get harder (specifically LCD) on models 2017-present. Just looking for something that will hold up and can repairable relatively easily.