I'm very happy with my sub 8. The low end extension and definition is simply jaw dropping.
While my initial tought was "who needs a remote?", this option is mighty convenient.
A word of caution, this sub can and will reveal insufficiëntly damped room modes.
So before you invest in a sub like this, fix the acoustics of your room.
If you don't want to (or can't) do that, then this sub is not for you,
you're better off buying something about half the price...
In my case, when given a new choice, I would simply pick the sub 8 again.