[JimSpence]

I haven't checked prices lately, but I'd bet that two WB68s and 4 high freq splitters is less expensive than the WB616.

 

[JimSpence]

Yes, if you need those channels on all receivers. If not, just plan which receivers are connected to the multiswitches.

With the rollout of the MPEG4 sats, will you still need the 72.5 for your locals?

 

[JimSpence]

To clarify a little. You are getting your SD locals from the 72.5 sat. The new sats will have your HD locals, which then means you can abandon the 72.5 dish.

What's your location?

 

[JimSpence]

It seems that you are in the 99 DMA, so the HD locals will be available to you a bit sooner than me. (DMA of 156)

 

[JimSpence]

DMA = Designated Market Area
This is a ranking based on Nielson data. There are 210 DMAs in the US.

This forum may by of interest to you.
http://www.avsforum.com/avs-vb/showthread.php?t=453241
Find your area and see what others are having problems with.