Moving averages?

["RB" <rhodes@xxxxxxxxxxxxxx>]

I would like to know what moving averages have others found to be very 
smooth but also quick turning?  I would want the average to work good in the 
15 to 40 period range.
Would like to hear about any similar to what I am looking for above.  The 
public domain ones and the ones that vendors have for sell.

Thanks,