Not as smooth as my iPhone
And I'm pretty sure a JB does all that.
i got the the samsung galaxy s2 a week ago, and this thing is as smooth and even faster than my iphone 4.
the android platform is improving all the time, they have learned from it's mistakes pretty quickly and each update is 9/10 times a vast improvement, adding feature after feature.
i think in the past you could say android was slow, not smooth, not reliable, at least compared to IOS, however google each year has been improving it to the point that right now, it is as smooth and as quick as IOS.
i went to the android platform because my screen on the iphone 4 cracked, and for no real reason, then i decided i needed a little change. i got bored of the IOS ui and the lack of customisation you can do on ios.
i personally think IOS is lacking slighly, reason beings with android, if you get bored you can completely change the UI the way you want it to be, and continue changing it.
that said IOS and iphone is better than android in some ways as well, especially for the mass market and it has a WOW factor in terms of appearance.
this competition can only be WIN for us consumers which is fantastic. that said, i find it sad the "fanboy'sm" blinds people from making their choice.
its like a herd mentality which is pretty sad considering we are meant to be a superior, logical race.
you don't always have to buy apple, and if their is a superior phone, you should be able to take your fanboy glasses off and look at another product or platform with a open mind.