Philippe,
I haven't seen a Meg in person, but having used the Evo for almost a week in Sharm and owned a CK, they are relatively the same physical size if same size tanks are used.
However, using the standard configuration, I needed much more weight to descend with the Evo than the CK.
The dive center I was borrowing the Evo from was waiting for a Meg, but unfortunately, it didn't arrive in time for me to try...
