There is nuance here. Locking tuners make a big difference in how long the tune lasts (very), especially since I float all of my trems. It's also easier to change strings. Is the difference enough that I need locking tuners? No... I have 2 Deluxe strats with locks and 2 American std strats with standard Fender tuners. I prefer the locks, and definitely notice an improvement, but not enough that I feel obligated to install them on every guitar. Similar thing with the difference between the Fender [Ping] locking tuners and high end locking tuners. The difference is definitely noticeable, but everybody has their own sense of the value of $100.