more turns or biger cap?

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Original poster: "J Dow by way of Terry Fritz <teslalist-at-qwest-dot-net>" <jdowphotography-at-hotmail-dot-com>

Hello all
Thanks for identifying that ebay thing.

After a coiling for a few years and with John Freau's TC efficiency theory.
It seams that the best performing coil is a large one 1600 turns of thin 
wire and a primary with many turns.
But this means that the cap wants to be small.
If I'm running a coil with a 5kw 4-pack MOT stack, the cap can be big, and 
should be to handle the powers involved. So does this point to an even 
larger coil to get the beast performance?
If I wind an 6"x 36 coil with 24awg and I have a 20 turn primary. Is that a 
waste if I use a .1mfd cap. And if I use a smaller cap say .04mdf I can use 
more primary turns but will this give the best performance for the power?
What to do what to do?

Read you later
Josh