I currently use a Thimblelady thimble. I personally find that my hand quilting stitches are much smaller and consistent. I did not get her books or other products, but looked at videos online of the thimble being used, from their I worked out the technique being used.
Anyway, first I tried a Thimblelady thimble - a plastic one - from one of the ladies in my quilting group. I found it quite pleasant, so I bought myself a stainless steel one. Then a short time later I found a sterling silver on online and bought that (for a very good price).
I thoroughly enjoy them, but I would recommend that you try before you buy. You might not enjoy them the same, and they definitely aren't cheap. My first quilting thimble was a Clover adjustable open ended one too.
As yet, I haven't tried any of Thimbleladies other products.