I purchased the FlexyRectangle skins. I'm still trying to get my site up and running but you can look at it and see what you think. I have made some mods to the original layout but not much.
http://www.coloradoroasters.com
I would hesitate to recommend it for a couple of reasons.
a) It seems to be a bit convoluted in design. The skin1.css file for instance is huge compared to the original. It becomes difficult to tell what's new vs. what was original. I keep finding things that make me wonder if "this" is even being used anymore.
b) In my mind it's a step in the wrong direction. I would like to see my site have a much cleaner design based on CSS and now I've got this huge mess of tables that is harder to decipher. Disclaimer: I'm a reasonably good programmer but just learning how all this Smarty Template thing works.
I guess the bottom line would be: If you are ok with the basic design and don't plan on changing much it's fine. If you are planning to customize your site you might want to pass and just begin with the basics.
Essentially, your buying one template that has four different themes. The only difference being the colors used and a few graphics.
If I had it to do all over I would not buy it.
Matt