Shop for selling software or membership

Hi All,

I currently use drupal for my shop and I’m thinking about moving to wordpress, I’m having trouble identifying a shop will suit my digital download requirements.

The problem is that I need to be able to sell a multiple file product, but because it’s software I need the files to be always accessible, plus they need to be updated even after a customer has purchased.

I’ve looked at a few shops so far, and also played with S2Member which sells roles. I’m not quite sure if this is the best solution, but it seems to be the closest to what I require so far. I would prefer the simplicity of an updatable product ideally.

Thanks in advance for any advice ??
Andy