I'm leaning for htc butterfly because it is android which is majority's choice.It has 2 GB RAM, 1.5 Ghz scorpion processor, jelly bean, and a screen size of over 5 inches. Out of the 3, it has largest screen size.
The z10 is powerful machinery too like butterfly with 2GB RAM, 1.5 ghz processor, and blackberry world (like google play for android), but screen size is smaller.
Iphone 5 has smallest screen out of the 3 and has 1 GB RAM only, but it has some features which cannot be found in the other 2 -- like opening pdf file in browser (safari). The other 2 require pdf to be downloaded and it can't be opened on browser.
Also htc seems best because android google play has world's largest applications. There is an app of almost anything you can imagine and many of them are totally free.
Blackberry world lacks free apps and even basic things.
So htc butterfly is best in the world as of now?
Added (1). Also htc butterfly appears to be cheapest out of 3. The other 2 are well over 800 dollars at least. Htc has good reputation too and i looked at butterfly user reviews and they gave very high marks and everyone who has owned it is so far satisfied
Added (2). But from comfort factor iphone 5 is best.it is lightest and easiest to hold in hand.can easily fit in pocket and very ergonomic friendly. The butterfly is somewhat massive at 5.7 oz.and many who have held it in hand for long periods do complain of hand pain and wrist pains
Added (3). Actually its 5.5 inch screen on butterfly giving nice view
См. статью: Which is best smartphone of the 3 - iphone 5, blackberry z10, or htc butterfly?