BigCommerce vs Volusion: Which is best for you?

We use B2B Ninja for our quoting tool, which integrates with BigCommerce (and they recently purchased), saving our staff order entry time.

The only aspect where I find that BigCommerce doesn't really measure up is site customization.

Our visitors of our site and customers have a good experience when using our site because of Volusion. When we have had issues, Volusion support has been quick and efficient to resolve any issues.

Features for price differences on different options is too linearly set up, and the options show the user the price difference as (+/-)$0.00 to the base price shown, not the actual final price, which is confusing to many users.