Always been excellent until I chose USPS Internati...

Always been excellent until I chose USPS International instead of FedEx for a delivery to the UK, Absolutely USELESS, stated 'Delivery' time on Shopping Cart is unrealistic and has incorrect information!
Advice is for UK deliveries, ONLY use FedEx, delivery time IS accurate, extra price for vat & duties included IS worth it!
But Only problem I've ever had with Rock Auto!