What kind of oil filter do you guys use?

For my gas engines I usually go with Purolator, or, believe it or not, the Walmart brand filter. Walmart filters, last time I looked, were made by Champ Industries, as were Bosch and many other companies. For my Cummins I run purolator or Wix. Frams were known to come apart and plug the oiling passages on early Cummins Dodge motors, killing the motors. So I haven't used Frams in over 20 years. When I ran them on my gas engines I noticed the lifters were noisy at start up til they filled up with oil, which told me their anti-drainback valves were no good. Most of your engine wear occurs at start up.