Reliable, Fast, Burner for distribution purposes. Thoughts?

Hello AfterDawn, never posted on this forum before and hopefully this wont be another im new, what burner should i get type of thread. I visit a bunch of forums everyday so im not new to them and how they work, and hopefully when i get a well understanding around dvd's and burners i will be able to help contribute to this forum as well.

Ive burned cd's in the past, but never burned dvd's. Im looking for some answers to questions i have and some sort of direction in the path i should start my research.

What i want to be able to do is:

1) Burn dvd's that are great quality very fast so i can distribute them in large amounts.
2) I want these dvd's to play on every dvd player possible, so the burner needs to be compatible with all files. (I want to burn mpeg, avi, etc. etc. as well as be able to copy a regular dvd).
3) Since i will be burning tons of dvd's, maybe up to a hundred a week, what is the best for that? A external burner? Internal burner in an external case? Seems like the heat would be an issue.
4) Lightscribe is not necessary and if it leads to reliability issues would not be wanted.
5) Is it a better idea to get a dvd burner that is exclusively for burning dvd's and not for playback? Or do all dvd burners nowadays come with dvd playback capability.

Hopefully these questions make some sense, and we can get a good conversation going instead of the normal, "What burner is best?", "This one is the best Davez [insert name here]".

Thanks for your time, liking these forums already.