Why would I want one model rather the other?

What are the key advantages of each?

It's very hard to figure out without a lot of technical knowledge. A comparison chart would really be very useful, and would ease-up indecision, confusion and trigger-pulling procrastination.

That being said, I'm sure they're all great simply because Ascend is selling them, something I'm sure anyone who has ever heard an Ascend speaker or who knows Dave at all would agree with.

I just need more simple info...