Bought as part of the positive grid spark 40 amp bundle. Good build quality, feels sturdy. Each switch button feels solid and responsive. Plenty of preset options on the spark app so you can switch between controlling individual effects to changing presets altogether or even controlling media playback options. Bluetooth so no fiddly wires to deal with, had no connection issues so far. Can't really speak for battery life yet but have used it half a dozen times and still going.
Would recommend especially if buying as part of a spark bundle.