Hmm tough one.  I pretty much like all of them.  I would have to say:
 
1.  Mrs. Fresley’s:  Very good. Though I believe they outsource their pies and get them private label from All-American Pies.  Best chocolate filling I have had .  Took me FOREVER to find one though lol
 
2.  Little Debbie/JJ’s:  These pies are the same (Debbie goes through JTM foods for their pies private label).  A tad too sweet. Crust seems saturated with  grease.
 
3.  Hubig’s:  Disappointing. 
 
4.  Hostess: Still enjoy these. But the chocolate pudding lacks a chocolate taste sadly. The crust is a winner.