[McSmokey]

On your first question it depends on what Netflix agreement with the producers says some shows you get reasonably quick but most not until the season is over. To alleviate this I would add Hulu Plus to my netflix subscription(They are better for current shows).

The que is a list you create basically it's your favorites or stuff you plan to watch soon. This way the title is on hand and you don't have to run a search(Useful because in some cases it's easier to find a title on your computer than on your entertainment devices)

your internet speed determines streaming speed

Mail orders do have a better selection. when I still had the mail portion turn around was 3-4 days depending on when I sent one in.

I use netflix, Amazon Prime Instant Video, have tried HULU, and Blockbuster. I prefer netflix and amazon. Content varies across the various providers so YMMV.