Well, on first pass, I have to say I'm not impressed
I listened to the MLP 5.1 mix and Bruce is very prominent in the centre channel, and then, when he yields to a blazing guitar solo, that takes significant prominence in that channel. Sometimes it's more noticeable than others. Turning the centre channel down a bit helps, but I'm always loathe to make repeated changes to my set up. In stereo it's not so bad.
So, I tried the DVD-V version and the first audio track I tried was the DD. Things started well on the first song until Bruce's vocals came in and all the other instrumentation got ducked down by compression. It was so noticeable! Shocking. The DTS version was unlistenable! There is something wrong with the disc's authoring (or a fault with the disc, although there is nothing visible). Simply put, if you select the DTS track, then play the album from the beginning, the on screen graphics are distorted and so is the audio. Whilst this isn't a major problem as I would always favour the MLP track, if something is supposed to work then I expect it to work.
The general consensus is that this is a good Maiden album and it certainly ticks all the Maiden boxes, but from a m/c DVD-A perspective, it's a big fail.
To help console me, I bought as brand new copy of Tom Petty & The Heartbreakers 'Damn The Torpedoes' on BDA which should be here soon