[MAPerformance]

Just wanted to put in my experience with this module...

It does what it says it does, functionality-wise. However, we did not like the popup asking anonymous users for their email before the checkout process, and then having them enter it again during checkout (we use the One Page checkout module from alteredCart on X-cart 4.1.12, so I can't speak for regular Fast Lane Checkout). I can say however, that their support is top notch and they even offered us a refund on the module outside of their standard return policy. Great customer service!