I’m embarking on construction of my first well thought out fly rod. In past years I’ve constructed 10 or so “functional” rods, from glass to low modulus graphite. For reel seats I’d just order up something cheap that looked like it would work. Generally speaking cost was the highest consideration. For this rod cost is not the number one criteria, but I’m having a hard time justifying spending $40 or more on a reel seat. There are many options out there. This rod will be 9’ 6 wt, used occasionally in salt. Weight is a consideration, no heavier than necessary. Double locking nut or some sort of locking mechanism seems good. I have fished with reel seats that tended to back off and had to be periodically tightened while fishing, kind of a pain. There is a reel seat with an O-ring. I presume this is a locking feature. Does it work? A seat that holds the reel securely so it does not move or shift sideways during use even with different reels. I‘m open as to seat material, but prefer cosmetics of a nickel or semi-dark satin finish. Insert material is not a criteria in itself. I’m open. While a real lover of the beauty of wood, I am not all that interested in a fancy wood grain insert. Weight and cost are more important than aesthetics for the insert. If it makes a difference the blank while not purchased is likely to be from Five Rivers or Beulah. So what are your favorite reel seats?