i used to have a galaxy tab 10"... its was a great tablet...
but i sold it to get an ipad2... then, i sold my ipad2 to get a mini... best decision ever...

u need to know what ur gonna use them for... i mean, the most basic thing ..
as for me, i like to play around mixing musics... and good DJ apps are only available for iOS like CrossDj and Traktor...

i also use my ipad mini for web browsing, FB, eBay, emails, notes, utube, E-banking and sometime play games...
an Ipad mini is perfect for my usage as it is small enuf to fit my man bag...
i love the shape.. not too narrow, not too wide... it doesnt look like a huge phone....
accecories are cool too... and im not bothered to pimp my homescreen, arrange icons here n there, huge clock n weather widgets etc..
if i want to know what the weather is like, i just look outside

i have my phone with me all the time, so thats why it has to be an Android
i use my Xperia Z for social apps... Sony camera are the best!! and its waterproof too

but for tablet, i'd go for ipad mini anytime...