Hi Michael,
I have not experimented much with the settings now offered in the most recent Z-Suite. Frankly, I just always use the Z-ABS profile for everything and adjust temperature with Z-Temp, in order to minimize variables. Z-ABS defaults to 276º, although a print can start anywhere from there up to 290º, depending on overshoot. It's always back pretty close to that before the raft is done, though. If you have a Z-Temp and Z-LCD, of course, you can see the actual temperature at any time.
There is a chart of nominal temperatures at
http://www.z-temp.co/support/z-suite-nominal-profile.htmlbut it doesn't have the more recent additions to the Z-materials line.
When printing flexible material like TPU, I use RaftAway to slow the extrusion speed down by 50% and of course to remove the raft.
I don't think ZT-HE runs "hotter" than the stock hot end; the temperature is controlled by the feedback loop between the thermocouple and the heater, via the printer's firmware. The firmware doesn't know what kind of hot end is installed, and the aluminum blocks are quite similar between the two hot ends, so I think there's no reason for it to run "hotter", although its more free-flowing nature may make it seem that way.