Tell me about heaters

We recently became heater-less. We need to heat an area approx 8x8m. We had a panel heater on castors which was good but was really big and always in the way. I know you can wall-mount them but I thought all the hot air would end up at the ceiling, since hot air rises. Plus it would look pretty bad on the wall given its size.

Would love to know about others and their heaters.

I'm also confused about running costs. Wouldn't a 2400 watt heater use the same amount of electricity no matter what kind of heater it was? Or am I misunderstanding something here?

Thanks! Looking forward to being a bit warmer...

We have a reverse cycle air con in our living/dining/kitchen and its great. It's a really large room too.
Can't comment on operating costs - I just use it and pay the bills lol.

Heaters gonna heat.

Check out Noirot heaters. We have a portable one in the bedroom, works amazing, takes the edge off the cold without getting hot and stops bubs waking so much. :)

Sorry, saw the title and couldn't resist :)
It's probably worth talking to someone who sells them. They're paid to know that stuff. I had a really enlightening talk to one sales guy (had to wade through a couple first who had NO idea) & he led us to the right heater for us... and it wasn't the most expensive one either!
IRT your question about wattage, as I understand it the running cost is only affected by the wattage of the heater. On your power bill you've probably been told how much it costs you per kWh. If it costs for example 20c / kWh you are paying 20c for every 1000w you draw per hour. A 2000w heater with no thermostat will cost you 40c per hour to run, yeah? So regardless of the type of heater, the cost is the same, it's just that you want the heater that's going to be most effective at heating the room (in the quickest time - that's where you'll save money).
We have combinations of micathermic heaters, oil-filled heaters & fan heaters, depending on the space. The micathermic & oil heaters are apparently very similar in power draw & cost but I prefer the micathermic one - it just feels more efficient to me.