Resistance coil heater compared to ceramic heater?

Strictly speaking the ceramic heater is also a resistance coil heater, the difference being that the coil is embedded in the ceramic, giving a bigger heat-emitting surface.

In heating costs they'll be the same.

But having a bigger emitting surface operating at a lower temperature may give a "softer" heat.

A bit like filling a bucket of water from a shower head or a hose. It'll take just as much water, and take the same amount of time, but the wider spray from the shower head will hit softer than the jet from the hose.