Discount Kit

This app is really great, it makes shopify's built in discount functions much more... functional. With the native buy $x, get 1 item free automatic coupon, the discount shows up in the cart in a really funky way, where every item in the cart, up to the price minimum, show up as having a discount. With Discount Kit, it just shows the discount on the free item in a normal way. Customer support is quite good as well.