I had an NA a few years back, although not at the same time as my Zed. I've driven a couple of Ncs too.
Night and day. For me, the NC is a shadow of the NA and NB, and I wouldn't even place one against a 350 in any comparative term. The 350 steers better, brakes better, feels better, goes better etc. The only thing the NC has is the lower weight and a better gearchange, but that's it. In terms of the drive, it's an absolute no brainer to pick a 350 over an NC.