Mmmmm.......this is a toughie with a good few very worthy contenders.......

In the heavyweight camp it simply has to be either the PE or the '80. Suitably sleeved if going "ultimate" and, possibly, with the Venom / V-Mach style breech shim conversion for the 80. A custom stock to suit the owner's taste and ergonomic requirements and with a Slimtech style silencer / barrel weight.

But I'd be more than happy to choose from any of the following HWs too......35, 95, 98 and 99. The 35 would stay on irons and original stock. 98 on original stock. Happy with the standard stocks on 99 and 95, personally, but would have to go for a custom stock if going "ultimate" status again.