Yes very good and Very fast - because there is no string pitch to MIDI conversion step required.
Its as fast as a keyboard, and the Gen II version has upgraded velocity sensors on the right hand strings used for picking Volume dynamics.
But realize you must adapt your playing style to accommodate the YRG. And many cant, get frustrated and sell it.
I bought one from MF (there's my first mistake) and unfortunately got a defective one. Sent it back on their dime, but didn't want to deal with it for now, since shipping back and forth is a PITA. Now I see GC actually has them in store, plus I have a coupon. I might pick one up while I wait for the experts here to evaluate the FTP first before I jump in.
I'll be the first to admit I was a cranky bastard with the original, but also that the final revision of the firmware for the Gen1 had gotten quite good.
I only sold it because I wasn't using it due to my Roland gear.
Sometimes I really, really hate how easy the Internet has made it to flip gear!