On Monday, July 08, 1996 2:45 PM, vanech wrote:
>  To Whom..                                                   08 Jul 96
>
>             I didn't see any comments to your question on the forum, so
>  either you were answered directly or you have recreived none.. hope   
it's
>  not none. Anyway, IMO, layer count is normally a much bigger cost   
driver
>  than vias..With multiple spindle heads (I hope that's correct   
terminology)
>  via quantity should be a relativly insignificant cost driver when   
compared
>  to layers. Maybe some supplier could go into more detail for you. Hope
>  this helps somewhat. If you don't get more information and want to   
talk,
>  feel free to contact me. Have a good day.
>                                              Bob Vanech
>

Just to add my 2 cents.....

I believe Bob is right in regards to cost - layers are higher cost than   
vias.  From a noise standpoint you may have more trouble with greater via   
counts - your planes start to look like "swiss cheese" and you might even   
isolate some areas of the plane if many vias are close together.

You will just have to take all the factors into consideration and   
determine what's best for yours situation.

thanks...ben

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