Double vs triple channel: running multiple stuff at once

Hello,
Hello guys. I want to upgrade my mobo/cpu/memory kit and im looking for something that can last for many years without feeling "slow"

I once was looking at the 1366 socket intel i7-950 but with the new release of the sandy bridge cpu i am very tempted to buy the new intel 1155 socket cpu i7-2600.

My question is: Does triple channel help to run more applications at once? For instance, encoding while playing games (in order to stream).

I havent found a review that tests running multiple applications at once. They only focus on 1 at a time and syntetics tests.

-Is double-channel enough for my needs?
-Will triple-channel become a factor in the future?
-Do you think that the upcoming 1356 can exploit the triple channel bandwidth better?
-Should i rather wait for the 1356 socket cpu or the bulldozer from AMD?

Thanks.

Well i am not getting much response on this thread... lets discuss the theory of this.
Having a higher memory bandwith, in theory, will make more memory bandwith available for the CPU to use.
This will let the CPU make more read/write operations in less time.
Now, i am assuming that the CPU that supports triple channel (eg. lga 1366 socket) will be capable of using the whole bandwith, correct?

So, in theory, the more software you have running in paralell the more read/writes you need, correct?
And finally, in theory, triple channel should help me to run more stuff at once more smoothly, right?

Now, i am curious if the CPU can actually use more than dual-channel bandwidth while doing other operations rather than read/write. Most syntetic benchmarks that favor triple-channel do single operations like just read or just write.

Will i ever (near or far future) be capable of using the whole bandwidth in real life situations? like the one i wrote above.