mine say on the sticker "EEF2400 Evolution II " i was wondering if i got a newer version or are they all the same?

 

Evolution II is just the name of the product. It doesn't mean that there is an Evoluiton I for your application, which there is not. Edge did come out with a first style Evolution that looked like a little gameboy. That would be considered the Evolution I. Your Evolution for your application is the only one available.