I'm not sure on the tranny cooler issue. I've been reading about it but so far haven't confirmed if the '08+ work the same way. Doesn't look to be a big deal either way. I'm sure they CAN go 130k miles without major problems....pretty much anything can do that these days. Some folks say Dodge is horrible but I've got over 200k towing miles on mine with the biggest problem to date being u-joints. I buy about 40 new vehicles a year for my company and we have many with 100k+ and they're generally abused like any typical fleet vehicle. Most are Chevy or Ford trucks.
Patience is a virtue when buying a vehicle. I lucked out on the Pathfinder as I was shopping 4Runners diligently (lots of rental returns there too, none with tow package) before I realized how uncomfortable they were. Found a couple rental return Pathfinders I liked but didn't really want that. One clearly had bodywork but nothing on the carfax. Decided to wait until after the holidays and then Christmas eve someone posted a used one on CL. Said they were going to trade it the day after christmas on a new car for their wife and they were trying to make a few bucks. I pounced as it was a well equipped SE with only 14k miles. $23,500. Probably could have done better if someone was truly desperate to sell...but it was a good enough deal and mint for the most part. Wish it had side airbags and Bluetooth but that would have been pressing my luck a bit much. This one has moonroof, bose, backup cam, and a remote starter.