After an exploratory phase of cheaper nickel and rubber rings of various sizes, I finally discovered the Titan; most likely the best ring manufactured on the planet. These rings are a bit costly but the quality is second to none and they look and feel so damn good. I have all three sizes of the Titan. My experience with larger diameter rings always had me wishing for smaller, and have settled on 1 3/4 for all of them. Initially starting with the .2, it's perfect for all day wear and great as a first experience, but once on to the .4 I think I'll retire the smaller one. The .4 is subtle, you can forget it's there and wear it all day everywhere. Then there's the .6. I have several other Gear Essential rings and they all have a time and place, but this one tops the list. This is the one I wear every day, all day now. It looks great and you are more often reminded it is there than with the .4 (good thing) Sex with the .6 is exquisite. Can't recommend these enough and in my experience, if in doubt start here. IMO; .2 for introductory, .4 subtle all day wear, .6 the only one you'll ever need. Thanks Gear Essentials!