ShippingEasy

The Pros:
Easy setup and integration with ecommerce platforms
Great rates
v2 saw improvements like the ability to manually create orders for your store, group print labels, group as batch, split orders

The Cons:
v2 saw the removal of the Rates Comparison Wall which was very useful in finding the cheapest rate
v2 UX feels alot slower because of all the added steps
Don't know if you're able to save package dimensions anymore in v2
Quick ship would be nice to have in v2

Hoping to see FedEx and UPS support soon