Diesel Bombers - Newb from Colorado

Hey yall, my name's Wade from Aurora ish Colorado. Been using this site here and there for answers on some miscellaneous stuff but finally decided to make an account on here. I've owned both a 2002 F-250 7.3 short bed that I bought with quite a few upgrades, as well as a 2008 F-350 6.4 long bed which is my current daily driver. I'll need some assistance answering little stuff about the 6.4 as it just does some goofy stuff. Does kinda suck cause I heard they were good then after buying I heard 08 and 09 are rough and the 2010 is good. Non the less Id like to upgrade much as possible but still use it for pulling trailers and doing work. Any advice or suggestions are much appreciated! :)