Hello,
My primary computer is still the MacBook Pro 15" 2013. I have done a battery replacement (pain in ass), and also upgraded the hard drive. Otherwise still works well, with dual graphics cards, HDMI slot, traditional USB3, and a happy keyboard. I also use a Mid 2010 27" iMac, having added RAM, and SSD hard disk. Rather easy to do.
If my laptop died today, I would either try to get the band new 16" MBP, or a 2015 MBP. I would skip the years with lack of ports, and crappy keyboards. Apple truly disappointed during that time frame.
Also consider the highly portable MacMini. Fits in your lunchbox, and wire it up to some display at your destination. We have a few older models on the TV sets where we stream television using MythTV. The MacMini also doesn't require Dongles in Paradise.
Note that some of the older MacBook Pros, before 2009, were limited in RAM. The batteries in these modules are Lego Block easy to replace, and a few screws out you may replace the hard drive. This is also right around when the external display port changed from the big DVI jack to the MiniDisplay port.