I have a 21 20 I have put over 100k shells through with no problem. My other sxs is a Purdey 12 with a non selective trigger which I have shot around 20k shells through with no problem.

If I had to choose between the two its no contest I would go with the 21. Nice thing about a 21 20 they are light enough to carry all day and also heavy enough to shoot all day plus you can buy AAs for clays and Kent 1oz of 5s in Tungsten Matrix for ducks.

AWC