which devices support Android

[Android Question]

Dear sir,
I am going to buy a new mobile phone which is Android within a range of 6000.
I also want to make career in Android development
Which Android version is sufficient for using in development of Android for me i.e.,what are the options for me in INDIA?
Is Micromax a good choice for me i.e.,does it support all the Android Apps?
Please answer .
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[Hadron]

I know nothing about Indian pricing, nor about Micromax as a manufacturer. But if you want to use it for development I'd personally recommend having the latest version of Android on it, i.e. 4.4 rather than 4.2 or 4.3. You don't want to be left behind quickly if you are using it for development.