Stee-Lee-Good in medium to fast water, 4-8 feet deep. Good for tailouts, riffle breaks and low water. Reason being they don't drop as fast...
DareDevils- Good in deep water/or very fast water.
And finally your Classic style spoon and the most effective.
Little Cleos/Rvrfshr/B.C. Steels, etc. Water 5-12 feet deep, moderate to fast water and good in mid drift pools, flats and even tailouts...

Diapers aren't as important as spoons, so get on it...