I really don't care how long it takes, so long as the series has good quality.

Monthlies,it can make better quality of the comics/mangas.

It really depends of the quality of the series and how well the author can do with the time constraint. A weekly series could be terrible because the author is just putting out issues to make a deadline. A monthly could suck because of delays, slow pacing, at what not.

Depends on quality

It's nice not having to wait a month between issues but as others said, it really is a matter of quality. I mean we get delays and stuff in monthly titles, I can only imagine how hectic things must be for weekly ones.

Depends on the comic. Weekly comics are often pretty short and meh, tho. Biweekly is nice

Word.

I definitely think they are better with a group of writers as opposed to a single writer trying to do it themselves.