Is ASUS Vivo Tab Smart worth it for $499?

$499 without the keyboard dock, and for the specs it offers?

And does it come with a free Kickstand?

Or should I keep my ASUS Vivo Tab RT that I bought for $399 + the keyboard dock for free?

I love my ASUS Vivo Tab RT, but I don't know if we'll ever get Firefox app - because this flash support for IE10 is too strict and it's too limited.