Right now, I am staring down two primary options, and they are IPS.Community Commerce and WooCommerce.
But really, what I am looking for is this:
Referred Sales Commissions (IPS has it) (Woo - has issues)
User group based pricing (IPS has it, but 4.3.6 seems clunk-ish) (Woo - configuration is clunky)
Gift Cards (IPS has it) (WooCommerce has it, but honestly its really weak)
Speed (IPS is fast) (WooCommerce can be fast but overall it seems pretty damned heavy.)
Payment Gateways Authorize.NET + PayPal (IPS + Woo both have this)
Coupons (IPS + Woo both have this)
But here is where I am at...
IPS 4.3.6, until I can get it upgraded and working, isn't working, and WooCommerce is just too heavy. I can't use Shoppify, SquareSpace, Wix, or Weebly (most self-respecting webmasters stay away from these anyway).
I'm a little curious about Magento and other cart solutions, but at this point, I need some other opinions. I've been spinning my tires in the sand for the last week on this thing, and I need a self-hosted solution to make it work for us.
What is your favorite eCommerce shopping cart solution and why? Is it feature rich? Is it fast?