The -200, -700 and -800 are re-brandings of the FFX/Kittyhawk models with no changes.
The -300 to -500 classic models are new to the web, and are the best (only!) freeware models out there, but no VCs. Very good detail on wings and flaps. Not a baked cake either - just a basic modification of the default 737-400 flight dynamics engine, and no night textures. But then, the designers state that up front.
You can use them with the updated realistic flight dynamics for the series uploaded here last week.
