What is the difference between newer and older versions of the Mac computer?

If I want to create an iPhone app which would be most useful. The newest Mac computer or the 2006-2007 MacBook on eBay for 400 dollars.

You do not want to get anything older then 2011 if you want to make iphone apps older computers will never be able to do it. I was able to do it on my 2008 computer but it was VERY slow

  • Would there be a benefit of having bluetooth 4.0 if some devices use older versions? I have the iPhone 5 which supports BLE 4.0 and also own a pebble watch which also supports 4.0. My car however only supports bluetooth 1.2. Does this mean I will not experience the battery benefits of BLE since I will still need to connect to my car which is on the older 1.2 version of bluetooth?
  • Will T-Mobile have older versions of the iPhone? I have recently found out that T-Mobile has finally came to a deal to get the iPhone and I'm very excited because T-Mobile is cheap and affordable and actually has unlimited internet… Well the only problem with me is I do not want to really spend 200+ on the new iPhone but will T-Mobile have the iPhone 4s or the 4 because I still like those phones… And will they offer the same things that att and verizon offer for like 50 bucks or even free?
  • What's the difference between Apple TV and Mac Mini? Can you get Microsoft word for apple Tv? Can you surf the internet? Also, if you can surf the internet by using an iPad for iPhone but use a keyboard and mouse?
  • What's the difference between MAC airport extreme and air port express? I have Wi-Fi but I do not have internet because I need a modem. Which air port should I get for my laptop, apple tv and iphone?