I'm looking to upgrade my Macbook Pro 2015 13" to double the memory from 8gb to 16gb and the storage from 256Gb to (ideally) 1Tb. I bought it in 2017 and underestimated how much of a workload I was going to put on it. I really ramped up development in 2018 and my laptop is desperately trying to tap out of the ring, so to speak. My current plan is to purchase a used Macbook Pro on Craigslist or a refurbished on from the Apple store. I'll sell my used Macbook Pro on Craigslist. I've had a good experience there though sometimes it takes a year or more to find a serious buyer. I can't think of a lower cost way to upgrade. I love the standard USB ports, the trackpad, and the keyboard..That keeps me from considering newer models as Apple had done some janky things with them. If you have a suggestion on a possibly better upgrade path, I'm all ears.