Android most of the time because i have 2 Android tablets(Samsung Galaxy Tab 2 7(back up), Samsung Galaxy Tab Pro 8.4) and 1 Windows 8 tablet Acer Iconia W700(i5 core).
I use my Galaxy Tab Pro 8.4 as my primarily Android Tablet and use it way more than my Windows 8 tablet i only use my Acer Iconia W700 just to edit my Youtube videos and surf the web and watch videos the rest(gaming, web, read the news, checking emails and more) i do on my Galaxy Tab Pro 8.4 because it is more touch based and more user friendly OS and is very portable, less heavy than my Acer Iconia W700 as it is a 11.6 inch tablet weight is 2 pounds and Samsung Galaxy Tab Pro 8.4 has a 8.4 inch screen and the weight is 331g.
I have a Ipod touch with IOS 6(can upgrade to IOS 7 but i can't be bothered to) but i only really use it for just listening to music and very light web surfing.
So what leaves my gaming Windows 8 laptop = i don't really use it anymore and it is a back up for my file storage and is collecting dust, so i might just give it to my mum as she needs a new computer because her Samsung Netbook is very very buggy and slow.
It is safe to say my tablets have COMPLETLY replaced my laptop.
I guess i use Android 75%(Galaxy Tab Pro 8.4) and 20% Windows 8(Acer Iconia W700) and IOS only 5%(Ipod Touch) of the time but for IOS that most likely will change and go up when i buy a Ipad in the future
I am looking to buy the next gen Ipad Air 2 in the future because of IOS 8 and split screen multi window feature and hopefully comes with 2GB of RAM as well.