Buying a US Pick-Up

H allo all together, I want to get a bigger pick up in the near future. I only have a lot of questions to ask, as I don’t have much experience in this area. Look at me quite a lot about which vehicles I like. This includes the Dodge RAM and the F-series from Ford. It will be a used vehicle and will have run up to 150,000km. The size of the engine will definitely be a V8. Year of construction will be between 2008 and 2 013 move. Now to my questions: Are there years of construction/model series that you would exclude due to too many problems ? (Evtl. Also problems that are not visible during a purchase?) Are there possible recommendations, which series are technically best ? How does it look with the engines with the V8 with gas systems ? Are there frequent problems that occur ? About general experiences of you I also look forward to independent of the questions. Thank you in advance and dear greetings .