basic S&H specs.

[Buck Buchanan]

Hi everybody,

I checked the archvies, Allen Strange book, and others on this but not
finding it (but I know it must be out there).

I'm looking for some quick opinions on sample and hold performance. 
I've started to evaluate some circuits and realized I'm not sure what's
"good" for synth work.  Although I don't need extreme performance, I
want to be at least as good as the "average" S&H on the average synth. 
In general I want best possible droop rate without exceeding acceptable
aquisition time, problems with interafacing to other synth's triggers,
or going to more complex topologies such as NS AN-294 (though AN-294
seems like a fun thing to try).

So, solicitiing opinions on any or all of the following:

-maximum acceptable aquisition time and related trigger width.
-width of trigger on "most" synths?
-what's "good" or "average" droop rate?
-performance of std 4016 w/3140 vs LF398 (leaning towards LF398 due to
board space limitations)
-source on polystyrenes >.01uf (this is where Mouser and Newark
selection stops).
-National gives same performance curves for polystyrenes and
polypropylenes... is this true?
-anything else ya wanna throw out there.

Thanks mucho one and all and happy new year!

Buck