The MagCase XL 2.0 is absolutely fantastic for transporting 40k miniatures. The directions were straightforward and the case was built in about 30-40 minutes.
One of the two clear front covers is slanted ever so slightly and there is about a 1/8th inch gap toward the top of case cover. It is entirely possible this is due to user error during build.
I fit a solid 2000pts of Tyranids with an entire tray on the bottom for Monsters and plenty of space in the second half.
Lastly, the case is HEAVY. It is well advertised that the XL is heavy and with models in it (granted I have a few 3rd edition metal models) it feels about 20lbs which is a lot heavier than it sounds. But it is absolutely solid and sturdy.