Calling the wisdom of teh internets - what do I look for in an iron?

 Our cheap Argos-sourced iron has patches of Teflon wearing off the ironing surface, and it's catching on my fabrics. I've cleaned it off, but it keeps on sticking. There's also not a lot to distinguish between low and high settings.

Does anyone know what to look for in a good iron?

I have no useful means to distinguish different irons except price, and it baffles me that they range from £10-60 for no apparent reason.

I'm mostly pressing natural fabrics, with occasional forays into blends, and the occasional shirt/blouse for work.

Any guidance gratefully accepted.