I have 3, 357, 44, and 50. The 50 is a handful to shoot, the 44 is amazing compared to a 44 smith revo and the 357 is like shooting weak 38spl out of a 6 inch 686.
They only like to run on hot ammo, but are very accurate and soft to shoot. Stout 44 loads feel like 45acp out of a 1911.
My 50 is the only mark 19, the others are mark 7. If I was going to buy them again I would do the 3 caliber kit. That way all would have pict railed barrels to run optics. No real need for multiple lowers as they are range toys or hunting guns.
Great guns, well made and a blast to shoot. Most haters I have found either never shot one or are too weak to pick one up!
50AE is much more powerful than 10mm and even more powerful than .44mag. You're considering a Deagle so I assume price is not a concern. Plus if you had a .50 (even 50AE) you could refer to your .50 lol like "Let me go get my .50", or "my .50 could handle that" or "If I had my .50 on me..." haha it would just be cool to own "a .50". You don't buy a deagle for practical purposes. It would probably be a great pig gun, as heavy as it is, I'd rather tote that along than a rifle from pig hunting perspective, you can keep both hands free, and as long as you got one in the chamber you know you could get at least one off before it jams. Other than that it would be great to show off to out of town relatives, "Hey you guys wanna see my .50?" watch them drool... Or have a conniption... Usually one or the other.