If it helps, I just recently got through a research session for a 44 mag for my hands, which I would consider small. I found both the SuperRedhawk and the 629 to fit fine, but honestly, the grip makes a huge difference. And for the small amount they cost, it's definitely something you should look into. Overall, I found the Super Redhawk just fine the way it was, and the one I felt with a set of aftermarket grips (didn't know the brand) felt great.
I've been suprised by the amount grips change the feel of a gun. When my sister was looking for a Beretta 92, we felt the one with the aftermarket (hogue I believe) grips. She loved the gun, I thought it felt great. After considering options, she decided on the Taurus 92. When she held that one, it didn't fit at all and I had to agree. Since I had kind of talked her into a bit, I felt it necessary to look into it. Ended up that the dimensions of frame were almost identical on the grip. With that same set of grips on the Taurus it felt great, but if she had felt the Taurus first, she probably never would have ended up with a 92! Just something that surprised me, so I thought I would share.
Hope this helps. I know how frustrating it is to make sure you don't end up with a firearm you couldn't possibly get your hand around. Good luck.
Gundraw