i just received my new ring. it is very nice. the design of the band itself is beautiful and you can't tell the difference between  this and 18k gold. they look the same, however, be aware that the picture shows the celtic design much darker and in greater detail than it actually is in person. while the celtic design in the picture is georgous, in person it is so light and small as to be almost negligable. only an arm lenght away and you can't tell what the design is. even a few inches from you face, you have to squint to make out the design. if you don't care about this, its a great ring. on some of the tungston rings, it is recommended that you order a half size down, but i ordered my normal size and it fit perfectly. could be because of arthitis in my hands, but i suggest going with your normal size. its spot on. if you want the design to stand out a little more, go with the 8mm. otherwise, this is a beautiful ring, very comfortable to wear.
UPDATE: after wearing this ring for a little while, i have become very attached to it. the celtic design grew on me. i know what the design is and what it means and thats all that really matters. the subtle design actually makes the ring more appealing and at this price, you can't beat it!