If you are selling competitive steers, Caldwell is your guy.
He will work the phones, and he will buy calves from you.
Now as far as the sale format, I much prefer Breeders World. The sale lasts for 6 hours, and it is over. None of this 2 1/2 day garbage. Start the sale, bid em up, and end the sale.
I believe that many of the new sale sites are starting to gain some traction, including ShowStock Planet, Steer Planet, Steer Bidder, SaleDay USA, etc.. If I were going to have a sale in which I did not feel that I needed Caldwell for his ability to pedal my calves, I would use whatever is the cheapest.