I changed over a stock on one of my guns, I sent out for a laminated blank, I did all the fit and finish myself and it came out great. I went with a thumb hole and now have two after I found out how much steadier I could hold on target free hand with it.
I "had" a gun with a syn. stock, I hated it. Sold it last yr. I never liked the feel, the balance of the gun after I put it on, and the noise in the woods if a branch hit or dragged against it. It was not good.
The stock shape and feel can make or break how you feel about the gun, if it doesn't fit right you will not trust it. Lack of confidence will lead to judgement that the gun itself is not good. Take your time and look around.
FDXX75