Thumper, the Searcy PH model is $9500. The 470 is a great choice and big enough for anything. It has the same energy range as your 458 so expect the kick to be similar. Mine weighs 9.5 pounds but most will be 10-10.5 pounds. The 470 probably has the best resale.

The Heym is in the $16K range, I believe. The Blaser S2 is in the same price range as the Searcy but does not cock on opening or closing. It (along with the Krieghoff) has a separate cocking device which seems a bit dangerous on a Dangerous Game Gun. The Rigby (made in the USA) is about double the price of these two guns, but I don't like it as much. The Chapuis has a cheap feel to me but everyone is entitled to their own decisions. The big shows will have most guns there to fondle. Have fun making your choice. I don't know where you are from but both Rigby and Searcy are in California.