You shouldn't apologize for asking questions, your questions aren't ridiculous and if people don't want to answer, they won't. This is an expensive decision.
I have the 8900, got to it from a Babylock. It wasn't at all hard to learn how to use. The manual isn't all that well-organized, in my opinion, but once you find what you are looking for, I think its adequate to figure out what you need to figure out. If you are a new sewist, its a lot of machine to learn--but if you have some experience its a great machine to grow into. Seems like a good price. Just make sure you trust the dealer because you may need to go back if something is wrong with the machine. Good luck and have fun hunting!!!