I started years ago with a Rada sharper and have given them as gifts when friends stop over. I purchased a few knives and now have them at my home and summer home. Many of my friends now also have Rada knives. Love how they sharpen and stay sharp.
I recently bought 3 sets for Christmas gifts. I have used them at one friends house and they are very sharp and feel good in the hand. I may order more for myself.
Reminds me of a filet knife. Has a good, sharp edge, and feels quite sturdy. I just got it, so I don't have any experience about how long it will last, but I've heard good things.