It's just feel or preference. I gave up inserts many years ago and never looked back. I used to hit up on the ball a lot with inserts, so for me no inserts means a cleaner release. Another benefit is no more maintenance and cost for replacing inserts. If you buy a lot of used balls, inserts might save you the cost of a full plug and re-drill, but unless you span and pitches are almost identical and you like the existing drill pattern, it still might not save you anything.