PD Mk II...

...JF/AH Mk II (same plane!)...

...PD Mk I Special topside...

...JF/AH Mk I Special topside...

...PD Mk III Special...

...JF/AH Mk III Special (again same plane, but forgiven as it is Guy Gibson's!

...PD Mk I Special side view...

...JF/AH Mk I Special side view...

So, after losing the will to live after doing all those, impressions.
Nice VCs on the new JF/AH one - certainly nicer on the eye than the PD one (a year younger of course), and better modelling of the internals of the aircraft, although no virtual crew except in the external views, so you flying solo! Nice little detail, such as the creep markers shown on the tyre in the last shot above. Nice modelling on the whole. As the pictures show above, the textures are a little misaligned in places (generally the same place - the letter in front of the stbd roundel. These textures on either side also suffer from being blurry when switching views (until you've zoomed in and out on them), and the red of the letters appears rather loud, reather than the muted red as seen on the PD version...
...and the props! (The PD version also has those beautiful prop disks)...
All in all, about equal, except in the externals, where PD's is a fair way ahead IMO.