I prefer the Bisley grip, but have and shoot both Bisley and plow handle.

Only plow handle is the new (small frame) 44 Spl Flat Top

[Linked Image from i.imgur.com]

I have several Bisleys on the old (large frame). 45 Colt Vaquero

[Linked Image from i.imgur.com]

Also have Bisley Blackhawks in 45 Colt and 480 Ruger.