Thanks a lot for sharing your experience with the Andersen hitch. The difference you mention in eliminating the feeling of being pushed around and less bounce is enough to get me to seriously invest in trying that hitch. When I bought my truck I had looked all over the midwest for a long bed, but none to be found - it sounds like you have an awesome combination with your new truck. I'll likely also go with another set of tires this summer, but haven't yet decided what type.I'm towing a Hitch 16RD from Cruiser, 21.5 feet tip to stern... and not nearly as aerodynamic as it looks, mostly because our Colorado's are shorter in height and the 'bug line' is hitting below the start of the front curvature so I don't get the affects that may be associated with the curved front... I may experiment with a cap to see if that helps.
As for the tires, I'm mostly convinced to put on a set of BFG KO2 D-rated tires for the sidewall protection since I'll be on a lot of crushed rock this summer rather than gravel, the other option is to buy a couple of the OEM tires and throw them in the bed so I'd be traveling with 7 tires total...
For towing, I like the Andersen for several reasons. First because it works really well and it feels good. Second, it is supper easy to put on and off with little effort, you let your jack do all the work and simply push the pin in and lock it. Third, I prefer the methodology of how it works compared to the locking of the TV and TT together that most anti-sway hitches use. I think this is important as our TV is relatively light compared to most.
I purchased the Andersen when we purchased the new TT after having used a blue ox with the rounded bar for years. I had watched a guy back in his TT in a spot with it in a campground in Colorado and couldn't believe how much it allowed him to jackknife this setup all without making any noise... chatted with him and thought, gotta try it. The ability to back up without issue at any angle is probably my favorite feature.
In a cross-wind situation, you'll feel that initial hit if it's a gust but there is surprisingly very little movement on the TT. It has to do with opposing forces with a heavy dose of friction at the pivot point, as an engineer this was appealing to me verse me being 'locked' into the TT. The fact is a gust will push your TT, the only question is how's your hitch going to deal with it. Most anti-way hitches 'lock' the TV and TT looking for the lateral grip of the TV to do the work, so you feel a heavy push on your the rear of your truck. The Andersen uses friction to fight the lateral movement the TT is being hit with and using the forward force of the TV to straighten it out, so I never have that feeling like I'm being pushed around anymore than when I'm not towing.
Another great feature of the Andersen is the bounce dampening... with my old hitch bouncing was harsh, way less harsh with the Andersen, again due to the 'unlocked' nature of the hitch as well as the bounce dampeners it uses.
all that said, I traded in my 2020 CCSB V6 for a 2022 CCLB Dmax recently, took the TT out for a shake down of all the mods/upgrades I did on it this winter/spring and will tell you that the extra 12 inches of wheelbase is really nice for helping to stable the whole towing set-up, it was only a few hours of driving in each direction, but the wind was blowing.... the fact that I had to do a nationwide search and drive to Nebraska to get the truck is a whole other story...
Hope this information helps you make a decision on hitches, and if I do buy the KO2 tires I'll let you know whether or not I think it was the right move... I expect to do about 12,000 miles total on this 4 month outing and tires are my last point of question...
Your outing to AK sounds like a trip of a lifetime!