intensifying screens

[Steven Hecht]

I would like to get some intensifying screens for autoradiography
cassettes for use with 32-P blots. Comparing prices reveals that
there are different types of screens- or at least different labels
on those screens. Has anyone found some of these to work as wellas
lightening plus cronex screens?
examples:
	Fisher brand 14 x 17 in, pkg of 2:  $309
	l. Plus cronex, as above (sigma):   $411
	Sigma brand , as above:             $370
	RPI calcium tungstate, as above:    $250
the 8 x 10 in. follow a similar pattern.
thank you for your cost-cutting and time-saving advice.