Give me a good double in either 470 Nitro or 500 Nitro if cost was no object. Once you handle a big double and learn how to really use it you will understand why so PHs use them despite the cost. That immediate 2nd shot is handy and when you learn how to do a proper reload you can get 4 shots off quicker with a double than a bolt gun. I had a Williams Evans double in 450/400 3 1/4 Nitro Express and I practiced until I could shoot it like a machine. However in a fit of extreme stupidity I sold that rifle. Sure wish I had it back.