Modify stock head or buy one?

[n_green]

I'm thinking of getting the head modded on my '11 300. Would people recommend keeping the stock head stock and purchasing another head to modify/get S3 head with inserts?

From what I've read most people are happy with the mod, I just get nervous permenatly changing something with no easy way of changing back.

If I was to get the S3 head with inserts could I leave one insert standard and if the squish needed adjusting modify one of the inserts? When you modify the S3 for squish / readjustment of the bowl do you only modify the insert or the head itself?

Or is it cheaper/ same price to purchase a stock head and get it modified that way I have a stock and a modified head?

Or am I worrying about nothing and wasting my money and should just get my current head modified and with the money I save get the 36mm carb oval bored as well