I have explored a bit out of prog in the recent years (particularly gothic/doom metal has kind of interested me), but it's more in the way of broadening my tastes rather than "moving on". I still feel progressive metal is in the centre of everything I love in music, and it's the kind of music that I can incredibly enjoy listening to no matter what kind of current "phase" I'm in. I haven't listened to DT or other "classic" progressive metal seriously for a while now, but it's just a kind of break rather than a serious change, I can see myself returning to it soon. It's just a kind of music that never fails to impress me and that I can't get tired of, unlike some others.
And I know I'm risking getting flamed here, but I don't like the whole kind of "listening to anything but rock makes you awesome" attitude. I definitely see the point of discovering different kinds of music (I couldn't live without doing this), but this just feels like boasting how open-minded you are because you listen to
everything...
edit
I moved away from most prog metal several years ago. When I first got into DT, all I wanted was more prog metal, but eventually I realized that most of it is pretty terrible, outside of a few bands that were influencing all the others.
I've heard this countless times and I still don't get it. How is it terrible, or how is it any more terrible than "not too original" bands in any other genre? It takes a lot of skill to play any kind of progressive metal even if it's on the borderline of being a DT cover band, not to mention the amount of skill
and creativity needed to play it well. There are lots of interesting and unusual bands in the genre, and you really don't need to look that hard to find them.