Scott, I switched from Digitrax to ESU CC a couple of years ago with success. However my needs are different because I don't use block detection, but I do want Railcom for programming on the main to get the best out of my ProtoThrottles.
If I were looking at block detection and automation I would take a detailed look at the Digikeijs DCC system. They have a US distributor Iron Planet Hobbies. Not sure if it's ok to post links here but you can find them easy enough online.
Pete