Unless your buying a used truck from a trusted family member or friend I would get something with way less than 36k miles and 3years old so you will have some warranty coverage. I just could never bring myself to spend $20/30k on any vehicle with close to 100k miles.
Why? As long as it has all of the maintenance records and receipts, what would it matter? If a family member or friend is wanting to get rid of one they may or may not disclose everything to you in hopes that they can get it sold. Not all will do that, but some will. It's a gamble. You can buy a low mileage lease/rental vehicle that's still in warranty that has a ton of problems. Done that once... (thanks Enterprise!)
My 2016 3500 had 95k miles when I bought it in 2018. I paid $43k for the truck. But.... it was one owner, local trade, and had every service record and receipt for anything ever done to it. The truck always performed flawlessly for me and most of the miles on that truck were towing miles.
Same with my current 2018 1500. I bought it with 65k miles on the clock for a little shy of $28k. One owner, local trade, every maintenance record and receipt in the center console (and in carfax as well... always serviced at the dealer). The truck looks and performs like a new one. I've got no qualms with it.
Paperwork is the key. I trust documentation much more than word of mouth. Condition tells a lot too. If you pay attention it's easy to spot when someone slaps lipstick on a pig versus a truck that has always been maintained.