JR Kansai Pass?

I plan to trave to Japan ) Osaka, Kobe and Kyoto) for a week and wanna if it is worth to buy a West JR pass for 4 days+ 3 days pass.

Also, is the pass included a one way ticket from Kansai Airport to the city? e.g. Kobe?

If i buy 4 days + 3 days pass, it that means I got 2 ways from KIX airport to the city and back from the city to the KIX airport?

is the pass can only take JR, no other transportation?

What is the different to buy Kansai Thur Pass and West JR Pass?

Sorry for posting so many questions, hope you could answer my questions, many thanks in advance :)

In short, you dont need that much transportation cost in Kansai Region since the distance from one city to other is not that far apart there.

In Osaka, JR is convenient to some extent, but you might feel like using Osaka Subways, for which JR West Pass is not valid.

As for Kyoto, JR is convenient to REACH it, but not to GET AROUND it.

What is the different to buy Kansai Thur Pass and West JR Pass?
About JR West Pass
http://www.japan-guide.com/e/e2361_03.html
About Kansai Thru Pass
http://www.japan-guide.com/e/e2357_005.html

I advise you to check the 1d-day tickets in Osaka and Kyoto.