I noticed that RSM0 said he might just get an express...Don't. I made the mistake of getting an express Mkii instead of the Shortboard and all the express does is cycle through the 4 presets and give you the wah/volume. It's well made, but you still need the Ipad to stay open if you want to change banks and since it takes 3-5 seconds (or at least it does mine!!) to change the actual sound..well it's pretty much useless for anything other than practice.
I haven't gotten the Shortboard or the FBV 3, but if the terrible delay in sound is on the Shortboard it seems silly to buy it, at least if you want to use live for pedal effects or to change the tone.