I tend to agree with that. The first mini was a surprisingly solid story. I also found Suicide Run to be quite thrilling. Return to Big Nothing is a cool story that the first season of Punisher seemed to be either intentionally or unintentionally influenced by.
I'm in the minority because I didn't really like Garth Ennis's Welcome Back Frank story. The humor of it just felt a little misplaced and made the whole politics of the character decidedly uncomfortable. I guess I'm fine with the Punisher indiscriminately shooting a bunch of crime bosses. I'm a little less fine with him killing someone with pizza while having a supporting character whose name is a slur for people with cerebral palsy.