Well, in all truth;
The 2015 that we turned in didn't have a factory tow package, only a dealer installed hitch, So I was never 100% confident in it's towing ability.
The 2018 has the factory tow package and all that goes with it so I'm sure it will be fine getting the 210 to and from the ramp twice a year (or I have the Durango).
99% of my towing is the single Waverunner on the trailer, about 1 mile to and from the ramp, maybe 18 times during the Summer. The remaining is a two hour trip, from home to the lake house and back with the Waverunner twice a year, and bringing the SX210 the 1 mile to and from the ramp/slip at the beginning and end of the season.
(I know - it's nothing compared to what most of you guys probably do!)
2015 - 280hp - AWD
2018 - 310hp - actual selectable AWD with "tow mode" (fwd/awd/sport mode/off-rode mode/tow mode)
2018 is 700lbs lighter as well - I always thought the "15 was a bit underpowered.
We've been leasing from the same dealer and actually turned the 2015 in a few months early to take advantage of current deals and what they had in stock (why the 2015 didn't have factory tow - we couldn't find one so equipped later in the year last time and had to settle for the "dealer hitch" - I was pissed). They've been giving us great deals and switching literally cost us no money down at signing with the same payment as the 2015. We pretty much just exchanged keys. Any other vehicle in the class that I looked at in comparison would have been out of our budget and would have meant "negotiating" which I detest.
I'm mildly concerned about the interior being a little more cramped, but again, 95% of it's use is my wife's commute. We rarely use the third row of seats or haul a ton of stuff (one trip to the Jersey Shore in summer and I use a cargo box on the roof), and the 2018 has a much nicer interior than the 15 had. It's clearly more "carlike" and obvious that GMC is looking to compete more with the foreign manufacturers. All in all I think the 2015 was "truckish" and the 2018 is definitely "family". Lots of ammenities like cupholders, storage, tech stuff, etc, more geard toward everyday life. Overall better as a daily driver.