Scientific Anglers Line

I have the current SA catalogue and I don't see the Mastery Series line listed. Has it been discontinued and replaced with the Ultra 4 line listed in the catalogue? The fly shops that I frequent don't have the Ultra 4 line but they have lots of the Mastery Series. Could negotiations be in order?
Do any of you have an opinion on either or a comparison of the two?
Thanks for any info.

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Don

The mastery series should be at the beginning before the Ultra4 lines. I just got 5 lines last week from the Mastery Series (I got the Trout).

There is a seperate catalog for mastery products from SA.
Scott

Thanks guys

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Don