the tc nova sysem is excellent, if i had the spare cash i would upgrade to one in a flash, having said that i got a zoom b9.1 when hey were goin cheap and i cant really fault it, i dont use drive or amp sims and found the delays,reverbs, modulations filters etc do sound great and that z pedal is great for wierd stuff plus its not noisy and the pedal synth feature is handy too.
still want a tc though