(New to the forum) seek advise (MM20 / 1938 / Azimuth)

I've been reading this forum for a while but never really posted. Just wanna say what a great resource this is! Thanks everyone.

I have some question about the 3 watches. I have seen quite a few of you purchased them and I am very close to ordering one myself.

I wanna hear your opinion before biting the bullet -

1. MM20 - to me its very similar to the Panerai, is this considered to be a hi quality watch or is it more of a Poor Man's version? What do collectors think?

2. 1938 - I have not seen one like it except in the vintage model, i do like the dial design but for those who have already gotten one, is the size similar to Panerai?

3. Azimuth - again, is this a tribute / hommage watch to the IWC big pilot? Or is it a tribute to another military watch?

Thanks for any input!

Jack