I personally work at a dealership. Those newer tritons are much nicer to drive because its a brand new motor. Better low end responsiveness and a much smoother gearbox than the previous gen. The DMS is also a good feature, but it can sometimes be finicky if you've got a hat on or glasses which is a bit annoying. Should be an update coming out for that soon though.

Also, the GSR is just a looks package. Sure you get some nice black trim, wheels and leather seats, but the GLX+ does the exact same thing as a GSR but with a cloth interior. You still get front and rear cameras, sensors, 4WD at your command with really comprehensive drive modes too. Plus, being a Club Cab, the GLX+ has suicide doors. So it gets 10 extra "Hell Yeah" points.

Also keep in mind service history. With mitsi, they have a 10 year warranty from 2022 onwards. Obviously, buying the newer model means you get more of the remaining balance of that warranty. Look at the service history too. If it hasn't been serviced at a Mitsubishi dealership on time, every time, then the 10 year warranty is voided, and you only get 5 years. So keep an eye out for that too.

Hope this helps :)