hostricity

I took over a an OSCommerce 2.2 site and moved it to our servers a year ago. I've added a number of modules, but the code is a mess due to what was done to it before we took it over.

We have some continuing problems with checkout, so I've added some code to track the issues, but ultimately I get bogged down in a mess of hacks by the previous sevice provider.

The site works, but it seems very clumsy, and honestly I'm just a little bit frightened by the fact that I don't know everything done to it.

My customer's business is doing well and now is the time to get better control of the shopping cart so that we can manage it better.

We use the separate pricing per customer module for wholesale and retail. We accept orders for distributors who have payment details on file. We accept wholesale orders where we authorize the sale through authorize.net, but don't actually run the charge until the order is packages and we know the shipping costs, and we have standard retail run in normal OSCommerce fashion.

I'm thinking that I'd like to move the site over to something like the Loaded Commerce 6.5 B2B system with the idea that we could at least start out with a known code base and it does seem to have most of the modules installed that we need

http://www.loadedcommerce.com/loaded-commerce-65-b2b-full-p-316.html?CDpath=187_214_216

It doesn't appear to have a provision for extra pages or for the article manager, which we do use - but which we could give up if we had to.

http://addons.oscommerce.com/info/7720/v,23
http://addons.oscommerce.com/info/8490/v,23

Here's what I want to know:

Is there any other OSCommerce "Loaded" version or branch I should look at?

If we buy one of these packages, are we really getting a known, well-commented and properly coded product?

Authorize.net works fine, but we have the Paypal problem in which the customer fails to return to our site to complete the order. Are there any better integrations of PayPal in OSCommerce that resolve this issue?

Are there other carts we should be looking at? I can write a database loader to move to anything we wanted to use.

Anybody have any experience with Magento?

What about OScommerce 2.3?

Assuming we stay with OSCommerce, at a minimum, we will create a new install of the code base and convert our data.

We're technically competent, so we can do what we need to do. We'd like to stay with PHP and mySQL if possible.

Geoff