The title says it all.

My Samsung 60" LED TV is wall mounted above a fireplace with its horizontal centerline 7 feet up while the rest of my gear is in a 4' tall floor standing audio rack about 5 feet to the right of the TV.

While seated in a center position 15 feet from all this, will the MX-890 control it properly without having to precisely aim the device at the particular component, or would you recommend IR emitters on each piece of gear?

I previously had an MX-850 that had very good IR dispersion. I was hoping the newer MX-890 would be just as good.

I have not used IR out on an 890 yet. I imagine it would work fairly well but can't say for sure. With that said, I ALWAYS recommend going with a basestation and emitters whenever possible. Completely changes the dynamics and reliability of the system.

Ir emitters on each piece of equipment will give you the best reliability regardless of how good the ir is on the remote.  Especially if you have long macros programmed into the remote.

What hardware is needed to utilize a base RF station and emitters with the MX-890?

Specifically, what is the approximate cost and URC part numbers I would require? I have three components in my audio cabinet - a Denon AV receiver, a Samsung blu ray player and the Dish Hopper box.

The Mrf260 is the most basic unit.  The antenna is built into the base and it has 4 ir ports.  Not sure what retail price is, probably around 150-200.

it includes the ir emitters.

Thank you very much for the helpful, prompt reply!

Surf Remote suggested I start with the MX-890 by itself and then determine if the IR signal is good enough to control my equipment before I invest in an MRF-260. They think the dispersion is excellent, but their advice is probably the best at this point.