What is The Best Cross Sell Mod?

I have been looking the Download area and noticed that there are 4 or 5 cross sell mods, Iam looking to add something like that to my site. But I have a few questions that I want to get cleared.

Is there a mod that will combine (May We Also Recommend) and (Customer Who Purchase This Also Purchased)????

Or Do I have to Add 2 different Mods?

I used the Cross Sell addition located here:
http://www.zen-cart.com/index.php?main_page=product_contrib_info&cPath=40_60&products_id=76

I had a web design firm modify it so it not only worked with the current version of Zen Cart but showed the suggest products on the check out pages too. Makes sense to hit the customer as many times as you can with additional suggestions.

As far as I know, 'the customer also purchased' is part of Zen Cart.

Thanks for the Reply, I did find the customer also purchased feature, Iam waiting to make some sales so I can do some further testing.

Can you include a link of your site so I can see how the mod looks like?

Also Do you have to relate products manually or it will generate links based on Automated System maybe pull info out of the description.