Pretty interesting. From my experience, Zoom oldies multi effects are really sux, including all GFX series but they are quite cheap. KORG toneworks are with flexable price and reliable. Behringer multieffects are not worth trying and settings are also crappy. Digitech multi effects are pretty impressive and cool as well as can get the analogue settings but the price depends. POD quality is th best if I may say. BOSS multi effect pedals also rocks as BOSS is what we all well known for in hardness and resistance, the price is reasonable and BOSS GT series are cool, expecially GT 8. Digitech GNX series are quite confusing as well as complicate but after use fully understand the manual and functions, its will be the life time gadget but still got many cons compare to Analogue effect pedals and stomp boxes. Thats what I known little for digital effects. ^_^