Please contribute to a discussion on the Pros and Cons of the various modern double rifle makers many of our members own or have owned.

What do you see as the pros and cons of each rifle that you have owned or actually used? Please detail which maker, model, calibre and how it was used.

Some of the more popular modern makers (on the forums at least):

Merkel
Krieghoff
Heym
Chapuis
Searcy
Any English DRs
Any other makers.