Wrong place to discuss such.. Search this forum or Google is your friend.. Easy.. Netflix remains the best at what they do.
I don't think you can. Netflix is a continuing subscription and as such, requires a valid card/payment method on file with each account. You can either update the current card info with another, like say a debit card or cancel your account completely. Either way, no additional charges as long as done at least 24 hours before the current subscription ends. Just to be safe.

Yeah... Precisely my point bro.. When I launch Netflix, I don't doubt the content will be there for playback.. It's scroll or search, hit play for instant streaming and relax.. No ads, no interruptions.. nothing.. Pause and can resume at the exact point at another day. Sure can be duplicated somewhat by the many other sources out there. Just none does it well like Netflix. Even Astro is susceptible to rain 

As for which is worth.. You won't go wrong with a highly popular service. Ignore those services that screams.. "We have thousands of channels & VODs, bla bla"... Remember they aren't legit and as such do not have the sufficient manpower or resources to keep them all up.. Just juggling and everyday problems. The really good ones like to stay under the radar and make their cash.. So the more dedicated the team, the better. IMO...Oh yeah, know that any $ you cough up for such is ....   .. So if they provide the service? Great! Else, move on to the next..