Which mount is which???

OK, somebody ejicate me here...

What in the heck are the differences, if any, between the following mounts...

EQ3, EQ4, CG4, CG5, Polaris, Great Polaris, Astroview, Sky View Pro, Apogee HD EQ, EQ6, Atlas, etc.

I own an Astroview mount that I bought with my scope from Orion. It looks similar to their EQ3 mount (which, in fact, they sell the drives made for the EQ3 for the Astroview).

Now I've seen where the EQ3 (or the Astroview?) is supposed to be similar to the CG4, but when I see the CG4, it is way to small, skinny and hardly compares the my Astroview.

My Astroview looks in comparison, closer to the CG5 in size, and it is rock-solid stable on a heavy duty wood tripod. The CG5 is supposedly a knock-off of the Polaris (or is it the Great Polaris...wait, is it the Super Polaris or the Super Great Polaris?).

Anyhow, all these knock-offs of other knock-offs is confusing the heck out of me. I do know that my Astroview is similar in almost every way to the CG5 except the mounting head on top has no dovetail setup.

What exactly is what when comparing mounts by name? Anybody have some definitive info?

A smaller mount, the Orion EQ2 is exactly the same as the Celestron CG3. I own both of these.

The Orion SVD Sky View Deluxe (not one you mentioned) is more substantial than the above but it is not the equivlant of a CG5. I own both of these.

edz