Hey guys !
Having looked at most new alternatives available on the M1 subject, I haven't identified any real overall significant improvement to part from my "trusted" Dragon M1A1 / A2 kits.
Interior and engine are currently not my priority so again no need for me to switch to a different kit.
That said I have noticed fit issues on later/newer DRAGON M1 kits, but my stash on M1s comprises mostly of the earlier production batches causing no real challenges.
What I have been doing recently on some kits like the Leopard 2's from MENG and TAMIYA is to fill the engine room with cheap, water based foam designed for use in the construction field.
Good thing about this method is to add "strength and level" to the rear hollow part of the hull .... especially most Leopard 2 kits have this issue of the turret rear having to close distance to engine deck due to the lack of structural integrity caused by the overall dimensions of the rear and the lack of any bulkheads for support.
So instead of starch building any bulkheads I tried this ... and it works perfectly !
Water based foam does not connect with the plastic enabling it to be removed very easily if required. I do tape/fixate the rear decks before inserting the foam letting any excess foam expand into the turret compartment to be removed after drying out.
Tried it first on the MENG Leopard 2A4 and on the DRAGON M1A2 and this is, I believe, a cheap and quick fix to "stabilize" any kit in need as can be seen below:



Hope this helps !
Cheers
Christopher