Questions before subscribing to Match

Question

I am very obsessive when it comes to organization of my files. I have the options of "keeping the itunes media folder organized" and "copy songs to iTunes Media" unchecked and all my music is inside several folders outside the iTunes Media folder.
So, from what I've been reading, iTunes Match is **** for obsessive people like me. It seems that itunes Match downloads the songs and organize them by the default iTunes way which is creating thousands of folders inside iTunes Media. Fine, I can waste days organizing them again. My first question is:
1. If I download a song it will be inside the iTunes Media folder, but then I can drag it to any folder I like and still be synchronized in the future? iTunes Match won't relocate the song or download another version of it to the iTunes Media if it doesn't find it there, right?
I have some classical music in my library. From what I've read Match searches for the songs by audio, not by tags, which I suposse I'll be having a hard time getting the right matches for  classical albums.
2. If there is more than one possible match, will iTunes ask me wich one of them is the right one?
3. If it downloads a song that is not the same version that I have, can I know wich version is downloading so I can update the metadata? It seems that it will keep the previous metadata even if the downloaded song it's not the same so I don't know if there is a way to know exactly wich version was downloaded.
I want to keep synchronized my iMac at work with the changes I make at my home, and I want to have the files in the computer, not streaming. I have no problems with downloading my songs at  home, but at the office is a different story.
4. If I back up my library at home and restore it at work, will Match recognize those songs as the same in the cloud so I don't have to download them again and still be synchronized if i change the rating for example?
My english is not very good so I don't know if my questions are properly written, sorry. If you want me to be more specific please tell me.
Thank you.
Alejandro.

Answer 1

I can't answer everything, but I can tell you that the matching process is very cautious. Only confident matches will come up as "matched." Everything else will be uploaded. Even if you have a song that's in the iTunes Store but that match isn't confident about, it will be uploaded, not matched.
Match uses the audio. The metadata doesn't matter. You can have Singin' in the Rain labeled as Rapper's Delight and it will match Singin' in the Rain. On another device setup with your iTunes Match account, it will download Singin' in the Rain and label it Rapper's Delight, just like you had it.
You likely won't match a lot of classical music, but it will simply get uploaded and distributed back to you that way, rather than being "matched" and downloaded from the iTunes Store.
You will never be asked when uploading which match it the right one. Either Match is confident it's right and matches it, or your song gets uploaded (again, even if it could have been matched and is in the iTunes Store, it gets uploaded). Likewise, when downloading, you will never have an issue with downloading the right version because it was either matched correctly, or it's your own file that was uploaded.
Your iTunes Library file will link the media in the cloud to a unique ID in your database entry. You can change everything about database line "550e8400-e29b-41d4-a716-446655440000" (for example) and iTunes will still know which media file in the cloud belongs with that entry, even if you changed the name, the rating, the play count, the artist, the comments, etc.