Hi Sushma,
Interesting poll !
Usually I use Internet Explorer, you can say it has mainly become a habit rather than choice.
Occassionally , I do use firefox, when there is some problem in the Internet explorer..but my choice is for the IE.
As for apple, I've seen my children use it in their laptops, which is very cool as you pointed out :). They seem to easily switch over from apple & internet explorer with ease.
Cheers
Krithika