Kinda corny, but it delivers, at least in terms of guitar playability, in fact you don't need exclusively the F4 footswitch to achieve intuitive managing, the iAMP app will got you cover.
The sounds for the guitar are very good, very versatile and most important infinite.
Also the little is very robust, and with the strap you can take it everywhere with comfort and security.
The only con I found was external music playing, the sound is very compressed, and not that loud. But well, nothing is perfect right.
But for the price is matchless, specially if you considering to buy some member of spark family, this little fella has more memory, more intuitive manageability and let's just the to the cheese, way cheaper.
You don't regret it.