tell me about it..especially with over 600 templates to edit for 3.7 O_o

ouch, I feel your pain. :eek:
(not really)

I have one available to the public, and four which are private.

The private ones are old themes that no longer work. For the 3.7 upgrade we just copied the CSS over from our theme and started from scratch on the templates. The only reason they are still there is for reference in case I forgot something.

VB Default only.

we tested about 7 or 8 different themes, but in the end for our webpage, the default matched perfectly!

Just one -- I find having more than means more work for me. ;)

One too. I would fine it too hard managing multiple styles. Plus, if you use a homepage (cms system) and you designed to blend in with a specific style, it wouldn't look right with another. And there is having to do template edits for each style if you you install an hack with template edits.

Our site has 2 selectable and 1 specific to the landing page.

What I would like to know is if there is a way to tell how many people are using the different styles.

I think with most CMS systems, or maybe in vBulletin itself, there's an option to force the homepage to display only one style. I can't quite remember where I set that, but I have that for my vBa page. It's actually been a necessity in my case, because I needed a fixed style for my forum pages, but a fluid style for the home page.

Just one. I do oodles of mods to my theme all the time, and replicating it across multiple skins is just a pain in the ass.

I do plan to add a fixed/fluid option though.

one, and it was painful!