The Mark I edition of the Double Eagle had problems with the trigger assembly. It also had pieces fly off if you took the grips off. The original trigger had a very short double action pull. If you pulled the trigger very slowly, the trigger may not reset for the the next shot. The Mark II corrected the trigger. It has a longer and smoother pull. Colt reoriented the pieces under the grips to where the the grips do not hold little springs and such in place anymore. The Mark II Double Eagle is a wonderful weapon. It is totally reliable. I personally like the decocking lever. It is fairly accurate and is comfortable to shoot. If you make sure that you get a Mark II, you will get a very under appreciated pistol. The downside is if you choose to carry it, it is difficult to get over the counter holsters. I know that Kramer will make them. The other issue is that to my knowledge, there are no after market grips to replace the plastic grips (although, the plastic grips are not too bad). Like I said, If you can get a Mark II at a reasonable price, I would not hesitate to get one. IMHO
Scott Weaver