I've tried old school Alesis, and newer Beatbuddys & Trios , Korg mini etc - this one beats them all. Its a natural process of feel the beat - tap it in either with the button, or scratching the string - I prefer button, and you're away. I tend to generally just use the kick button, because it generates a support for the other hihats etc - theres hardly any need to tap in the snare. If anything , the simple kick plus self generated accesories gives a more usable rhythm than adding the snare - it sounds less like a drum machine to me and a more acceptable support.
It takes a while to grasp the complexity of setting it up, and using the storage, but after an hour or so of perseverance - you get there!
Havent used it live yet, but I will probably give it a try one day.
The sounds are realistic enough for a low key gig to me!
I did buy the FS3X after a couple of days, and it's well worth it - easier to tap in beats (finger button for kick drum beats then hit the pedal to learn) also for adding fills & cymbals to make it more human! Also to stop - this way you can have the pedal at arms length for control.