How Valuable is Fast Internet to a Film Prod Company?

We're a video production company. Years ago, when we got internet to our office, AT&T DSL was the only provider available. Currently our internet speed is 5 mbps down/.7 mbps up, and we pay $70/mo. I had AT&T out yesterday to see if we can speed things up. He said that’s the fastest they offer this building at this time unless we did a T1 line. He said that would be $400/mo, 10 down/2 up.

I just hung up with Comcast Cable. They now offer service to this building. My neighbor down the hall has Comcast internet and is really happy with it. Comcast said they offer to this building: $60 – 12 down/2 up, or $100 – 22 down/5 up, or $190 – 50 down/10 up.

If we went from what we have now, 5 down/.7 up, to 50 down/10 up, besides having faster access to the internet and downloads, in what areas would it affect our productivity?

1 – would our access to our server be faster (since both the internet and our server are piped to our office computers over the same ethernet cable)?
2 – would our blog uploads be faster? If yes, a lot faster?
3 – are there other areas that our type of business would benefit that I’m not thinking of?

Thanks so much. Any input is appreciated.