Welcome!
We've almost got it right regarding the Cruise Control. When it comes to cruise control, here is the dealio!
2013 was the first year of factory cruise control. It is limited to 82mph *indicated*, which is 80mph *actual*. Installing a 190 rear tire, or especially a car tire will make the speedometer more accurate and get that max cruise control closer to 82mph. Installing car tires on my Gen III+ FJRs has made the speedometer dead nuts accurate.
After all the complaining, in 2014 Yamaha raised max cruise control limit to 100mph indicated, or about 98mph actual. I haven't tested to give exact results yet. That is how all FJRs are since 2014.
You can increase the 80mph limit on the 2013 by 1) getting your ECU reflashed by Ivan which will give you no upper limit and lower the lower limit. There are some other modest benefits to the reflash also. One negative of the reflash is the requirement for 89 octane gas instead of the normal 87 octane. 2) Your other option is to install a 2014 or 2015 'A' model ECU. Preferably a used one off ebay as brand new from Yamaha would be $$$$.
Yamaha made a metric buttload of 2013 FJRs based on how many used one's are always on the market. Many with low miles in great shape.
Some other tidbits:
Starting in 2014 the 'ES' model, or Electronic Suspension became available. Starting in 2020 iirc, only the ES model was offered. IMHO, the ES model is an excellent compromise that most riders would appreciate. But not all.
Gen 2 FJRs are from 2006-2012. But there were some changes in there. I would not get an FJR older than 2009. A 2012 would be best as the ground spider issue was finally fixed from the factory. These are decent bikes that can be had for cheap. I've put 148,000 miles on my 2009 FJR with a Vista-Cruise throttle lock and of course a whole bunch of other farkles.
But as said above, I think the sweet spot is the 2013-2015 FJRs. There are plenty of them out there. Don't be afraid to do a Fly-n-ride to get a great deal. I have done so on many occasions. My preference is one with lower miles, say under 20k or so. The FJR is pretty bulletproof but in my experience lower mile FJRs come with less issues from owner's performing sloppy maintenance and weird farkling as in questionable wiring for add-ons.
Good luck your search.