I’d say it depends on what the timing looks like. We had a similar-length layover, and got through border control pretty quickly but then waited a very long time for our checked bags. By the time we got them, dropped them back on the belt, got over the bridge to A and cleared security, we had less than an hour until boarding, in which case I’d probably just stick with the one in A. If you get your bags quickly (or aren’t checking any) and you see the security line at E is short, may as well check out the new one.