Hi there. I am completely neutral on this and very keen for advice (not just 'zen cart is much better', but more details of why it is better or not than oscommerce).

I am having problems with integrating a payment method to a new store I have built on zen cart so have just downloaded oscommerce and am going to start building the store from scratch with that as there is a relevant module to use my required payment option.

I see that the program looks fairly similar and am keen to know more about differences and similarities and so on as I want to build more ecommerce stores in the future but really want to take time to get used to using 1 shopping cart solution and stick with that.

One thing I have noticed so far is that the zen cart forum seems much more used and helpful than oscommerce's forum.

Any feedback appreciated,

Stuart