as for the crown : i find $60 a little expensive i just bought a used one from ebay for $20 shipped - you don't need a tube for modern 7mm crowns.
all you need is patience and a sniper program
the CGs :
they are shorter than MBW - yes - but not sooo short, they are very curved on top which let them look even smaller.
on the wrist however - the look ok imho.
i would not shave them from the inside and i did not much on the outside - wanted to keep as much material as possible ...
the CGs on the MBW are much more work - i had to shave them a lot on the inside and on the outside.
compared to the MBW you have the same gen like construction, gen modern 7mm crowns fit on the tube, the bracelet has hollow middle links,
bezel insert and dial is nicer. BUT CGs looks better after mods on the MBW ..... which will cost you $$$ to get it nice.
cheers,
Frank