I just got my Devicewear Ridge today, and I really like it. It's well made and fits perfectly. It's also quite functional, with 6 different viewing angles. I had been using just a Smart Cover. The Ridge doesn't add much bulk, but does add some weight (a little over 8 oz). It's noticeable after using the Smart Cover.
I think the weight is something I would get used to; however, after reading that the new Switcheasy Canvas is under 3 oz, it's something I have to try, so I ordered one this evening. Hoping that the weight of the Canvas is listed correctly (Had a Canvas for my Ipad 2, and liked it a lot, but it was a little bulky and heavy). Always seem to be looking for that sweet spot between protection and function.