Given some of the reports on this thread I was expecting a Ryanair/ULCC type experience. I think the regional carriers for the US3 are just fine for flights of this stage length and Helvetic definitely met that bar.

I flew on an A320neo in J on LH for the FRA - BUD flight going there (part of my long haul ticket coming from the US) and honestly these seats on the E2 were more comfortable although I had a whole row of 3 to myself on that one so a little more room to stretch out