If you want Big and Forgiving, the 54L is your putter. If you like a smooth easy stroke that squares at impact, you’ll like the 54L.If you like superior alignment, the 54L is your putter. If you like making putts.Definitely the 54L.
An SPG putter feels different. It should. After a round or two, you will notice a change in your putting stroke. If, on that rare chance, it doesn’t make you a better putter, send it back for a full refund.