Please educate me on the Pam 127 and ETA 6497 movement variations

[cougaree]

Hi guys,

This is one of the MM watch I have. Do you think if I'd be better off getting a DSN dial instead of superluming (with C3) the one I have on it currently? Does the DSN dial have bigger and buckier numbers? I am not really trying to make it look as close as gen 127, but I would like to make it to have better parts available. BTW, any thoughts on crown guards?

There seems to be a variety of ETA 6497 movements out there. I am just wondering if someone can educate me a little bit on it. What is the difference between H versus E movement, square bridge etc... any pictures would be even better.

Thank you very much!