Mustard caps are indeed coveted by guitarists for their use in classic Marshall amps. Tropical fish were used in some effects pedals and occasionally generate excessive prices too. Only certain values and voltage ratings are the desirable ones though!
I sold all my mustard and tropical fish caps on eBay, to cash in on the hype.
Yes, distortion tends to fall as voltage rating (ie. dielectric thickness goes up). Which is a great opportunity to plug my book! 
An externally hosted image should be here but it was not working when we last tested it.
I bought tropical fish caps on ebay before they got too expensive, because they are what I grew up with. I bought some mustards, but only when they were cheap enough - typically smaller values than the guitar people are interested in. When I one day build another valve communications receiver it will look (partly) authentic 1960's technology inder the chassis.Merlinb said:I sold all my mustard and tropical fish caps on eBay, to cash in on the hype.
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