Shopping cart for downloadable merchandise?

Which cart is best for selling e-goods?

[vicktornka]

I'm looking for a cart that will allow me to:
1. Sell a large number of products without getting slowed down.
2. Let me limit the number of times something can be downloaded. (i.e. once)
3. Have the link to download the file expire after a set number of hours.

Another nice feature would be the ability for individual owners of the downloaded goods to log in and monitor their own sales.

Do you recommend a good cart that can handle this?
Thanks in advance.

[Corey Bryant]

Are you looking for ASP / PHP?

As far as speed - you might consider your own server. That way it will be easier to control

-Corey

[vicktornka]

Thank you, Corey.
The type doesn't matter, as long as I can sell downloads with security and accountability.

[RaynmanOZ]

I would definately be interested in hearing what is considered the best php options?

[Corey Bryant]

Well best is in the hands of the webmaster. We have learned that you are not going to be abe to please everyone all the time - no matter how hard you try.

I would see if you could locate a cart that you like and then possibly add to it - to make you happy. That is basically what we have done in the past

-Corey