2 years ago i bought a 2016 MacBook Pro 13" 8/512 to replace a 2011 MacBook Air 11". previously had the "black" macbook, before that titanium MacBook.
really loved the MBA form factor but the screen was so dated and i needed a larger SSD. the 2016's keyboard took some getting used to. i preferred the slant shape of the MBA, but the retina display was gorgeous, super sharp, slightly more viewable space in not much bigger form factor and the glass touchpad felt great (the MBA's trackpad had to be replaced twice over 5 years of ownership, the 2nd not covered by AppleCare) and seemed durable, but would occasionally catch it with my palms and have my typing "jump" to another part of a document (annoying!!). missed magsafe. heavier/blockier than MBA (the slant of MBA took away sharp edge against the wrists). had some other keyboard issues likely related to dust where the arrow keys would stick...almost brought it in (had AppleCare), but it unstuck itself after a few weeks while i was trying to find time to drop it off. didn't seem much faster than the 5 year of MBA for my purposes (web surfing, ms office, photos, citrix). nice laptop but not as overwhelmingly impressive and lovable as the MBA11.
a few weeks ago, due to needing to write more for my work and my aging eyes, i decided i wanted a bigger screen. but since we have limited den space and i didn't want to plop a LCD monitor on the dining room table to plug the MBP13 into. so i decided to look into 15" MacBook Pros. new and even apple refurb'd MacBook Pro 15" were all over $2,000. i really didn't want to spend so much (even though it'd be a business expense tax write off) so i look at used ones on ebay. made an offer and got a 2014 MacBook Pro 16/512 with 230 cycles, a couple small dings, for $800. will probably keep the 13" for travel...or sell it and replace it with an iPad.
i've had the 2014 for a couple of weeks now. love having magsafe back. additional screen space and seeing has been awesome. display quality is nice, retina, but does feel a tad less sharp/vivid for some reason compared to the 2016 (will have to play with the calibration). only use for ports had been backup drives and nice not to need a doggle as all our backup drives are still USB-A. appreciate the nice travel of the old keyboards, although i did like the bigger size/surface area of the new butterfly ones. also quieter, not clickety loud in meetings. not fair, but speakers on the 15" sound great/better than the 13" 2016, although those are quite impressive for the size and definitely better than the MBA11. seems equally speedy for my needs (despite the 2016 having the faster pcie SSD drives). only dislikes are although the trackpad size is fine, not being glass forcetouch, it's mechanical hard taps/clicks feel super old-school. i used touch-to-tap whenever possible but sometimes hard taps (ie. to drag) are necessary and it founds/feels crunchy.
not everyone likes to buy used stuff. i generally buy new macs w/apple care and keep them a while (skip a few generations or for major re-models). but here's was an opportunity to try a new form factor and the hype is real in terms of these 2012-2015nretina MacBook Pros being solid performers.