Anyone tried one of these HEI Distributors?

Looks like Amazon has good price and free shipping on Pertronix Flame Thrower II.

Only question is oil filled for $34.95
[ame="http://www.amazon.com/gp/product/B00199DPWQ/ref=ox_sc_act_title_1?ie=UTF8&m=ATVPDKIKX0DER"]Amazon.com: PerTronix 45011 Flame-Thrower II 45,000 Volt 0.6 ohm Coil: Automotive[/ame]

or Epoxy filled for $46.95
[ame="http://www.amazon.com/PerTronix-45111-Flame-Thrower-Volt-Coil/dp/B000N2ZFL4/ref=sr_1_1?s=automotive&ie=UTF8&qid=1322768720&sr=1-1"]Amazon.com: PerTronix 45111 Flame-Thrower II 45,000 Volt 0.6 ohm Coil: Automotive[/ame]

I will be mounting the coil in the stock bracket on the intake manifold, which is horizontal. Does that mean I should get the epoxy filled?

Anyone had problems with aftermarket oil filled coils mounted horizontally?