Which towel rail?

The upstairs bathroom and the ensuite downstairs will both have heated towel rails (just a regular boring one for the main bathroom, as those towels won't be used daily).

Heirloom (from McCanns, made in NZ). Both models shown come with a concealed wiring option on either left or right.

Genesis model in various heights and widths, eg H1025 W600 (as shown) $530; or a wider version H1025 W800 $581. It has an energy-saving option (called ESP), which runs half-power most of the time, but press the boost button for a couple of hours of full-power.

The Premier model offers fewer sharp corners, good for klutzes like me, and rails that bow outwards. It's a  bit pricier, at $760 for the model shown (H970 W600 $760), but I rather like this option, at least for the ensuite. No ESP option. (JD agrees - I'll order two of these tomorrow.)

E&S Trading similarly only carries one brand, in their case, Hydrotherm. The TR1 600 CP (H700 W600), and including the concealed wire kit (attaches to bottom ends of rails) is presently available for $900 (RRP $1059)

Copper tube, not stainless, so better conductivity, but less sturdy.