I think the magnas look ridiculous on anything but a small snubnose. I have big feet (13.5-14 shoes), but average hands, and I like the target type grips without checkering. I would like some sort of grooves in them though. My new 46+ year old 28-2 came with Pachmyar rubber grips, and I immediately changed them to these Altamont rosewood smoothies that I just bought:
The grip fit is about perfect, they were difficult to take off when I realized one of the grip pins fell out as I was putting them on.