I tend to care much more about what I like rather than what I think is best, While it is wonderful to play the greats of the game, my tastes run more toward cheap, cheerful, distinctive terrain, good walk, f&f, quirky, lovely setting etc. More and more 9 holers are being added to the list as my tolerance for filler holes and holes to create a "total yardage" decreases. Yet none of that matters much if the quality of design isn't present and so this must be the #1 priority. However, quality doesn't necessarily mean among the best in the world, country or state. There is plenty of praise worthy golf which doesn't make top 100 lists. That said, there will inevitably be some cross over of best and favourites.
The Nifty 50 was last updated 3 years ago. A ton of courses have dropped off the list usually for two reasons; price hikes or I played courses I like more. Its rare that a course will drop off the list because I like it less than previously.
The courses in red are those I currently consider among the top 50 best of GB&I.
The courses in blue are non-GB&I courses that I think are of similar quality to top 50 best of GB&I.
Kington
Palmetto, SC
Castlerock Bann, Ireland
Cleeve Hill
Reigate Heath
Cavendish
Eagle Springs, WIS
Alnmouth Village
Gullane #3
Welshpool, Wales
Aiken, SC
Culver Academies, IN
Moray New
Church Stretton, England
Lederach, PA
Reddish Vale
Perranporth
Royal Porthcawl
Old Town, NC
Corballis Links, Ireland
Appleby, England
Minchinhampton Old Course
North Berwick
Pulborough
Lakewood Shores Gailes, MI
Otway, Ireland
Leckford Old, England
Silloth on Solway
Bull Bay, Wales
Covesea Links, Scotland
Seacroft
Seaton Carew Micklem
Painswick
Beverley, England
RAC Old Course
Rosapenna St Pats
Cruden Bay
Pinehurst #2, NC
Royal Dornoch
St Enodoc
St Andrews New
Northamptonshire Co
Southerndown
Westward Ho!
The Island
Hardelot Les Pins, France
Lawsonia Links, WIS
West Cornwall
Players Club Stranahan, England
Ciao