Hi Folks, first time poster, long time lurker.
I've owned a Colt Delta Elite for over a decade. Bought an Ed Brown .40 S&W barrel group (barrel, springs, bushing) for it a while ago because the ammo is cheaper to buy. The advantage here is that you can shoot the hotter 10mm if needed. It has been 100% reliable with the 10mm stuff but will jam with a FTF about once every 40 rounds in .40 S&W. I think better magazines would help but it's tough to find 'em for the .40 S&W. Overall its been a good shooter with over 5000 rounds so far. My opinion - I find the rumors about the Delta being fragile are unfounded.