I couldn't tell you but I do know that some cameras are not good fits for some scopes. It really depends on the adapter you will be using. Are you going to take a shot free-hand from the eyepiece, are you going to make you own adapter, go with a manufacturers or? I know I tried free-hand, and making my own first just to see how things were. That works but not as smooth as I wanted before I purchased the DCB adapter meant for my swaro scope. All up to you. The Elite will be your cheapest...the Kowa 883 will be most expensive. You might throw in the Swaro brand too in the 80mm models, for they are excellent scopes.
From advice I have had and from what I have experienced digiscoping, it is best to have a 80mm or in that range. A scope+camera will take down the light considerably and the larger scope you have the more light. If you are going to spend the money and it sounds like you are willing, spend it on not only the best quality but also the best features and 80mm is required I feel for adequate digiscoping. Where are you from? Do you have plenty of light?