Any question answered...

Who makes good, reasonably priced single speed freewheels?

White Industary ones seem really expensive (and far too much for me at the moment).
Shimano ones seem to be about £20 a pop.
There are a whole load of cheaper ones about. Are any of these any good, or should I just go for a Shimano one?

I'm looking for a 16T I think, and for a 1/8 chain.
I'm interested in this since my £7 eBay freewheel started slipping and crunching (at least, I think it's the freewheel).

I think cheaper freewheels are noisier and less smooth. If there's a £20 solution I'd consider that a very good value solution.