Some cachers think that the length of cache logs in a cache help determine the quality of a cache. I can see where that makes some sense, perhaps it's more how good (or bad) a time the person had at the cache than the actual quality. If nothing more, it's a testament to how much the finders had to say about the cache for whatever reason.
Anyway, here is a list of the top 20 caches which have at least 5 found logs and which have the the longest average log lengths listed from #1 to #20. I am sure I do not have all logs in my database, so the accuracy is not 100%. Some good reading in many of them just the same!
Maine’s Alphanumeric Cache Challenge (GC1JJ38) by Northwoods Explorer (4.5/4.5)
Maine's DeLorme Challenge (GCW8N6) by Team Teebow (Team2hunt) (5/5)
Maine's Adventure Challenge (GC1VWN8) by Northwoods Explorer (5/5)
WEREWOLF! (GC1QV1H) by Mapachi (2.5/3.5)
Molechunkamunk: Cranberry Cove (GCWEBK) by paddlehikers (2.5/5)
Molechunkamunk: Aziscoos Mt. (GCXJ2Y) by paddlehikers (1/4)
PINOCCHIO'S CURSE" (GCZHGY) by hoamdezinahs (5/1.5)
Sounds Easy To Me (GC1VFWZ) by brdad (3.5/3)
Jim's Last Cache (GC1JJHY) by NorthCumberMouth Cachers (2/3.5)
Debsconeag Ice Cave (GC108Y2) by Northwoods Explorer (4/4)
Norton Farm Overlook (GCKQ30) by Ravengal (1/4)
Beyond the grave (GC16Z0F) by 0din (2/3.5)
Portland Freedom Trail (GC1A9Y0) by kayakerinme (1/1)
Halfmile (GCH21C) by brdad (3/3.5)
Border Frontier (GCGA4T) by Liasis et al. (4/4)
Jeremiah Was a Bullfrog (GC1WRXQ) by Three Dog Night (2/5)
The Agonizer (GC203TB) by Law1646 (4.5/2.5)
Bessies Tale (GCW700) by LaughingTerry (1/1.5)
Hothole Pond Cache (GC13QYB) by Groleau (2.5/5)
Deathwish # 2 (GCXA1Q) by vicbiker (2/4)