It's rare that I find customer service that exceeds expectations but Mac's have just done it. I finally ordered a cover to fit my ProQ Trailblazer Deluxe but was sent one to fit the slightly smaller Maverick. In a rush to cover my 'Q' I failed to notice the error for a few days but one evening after grilling some steaks I noticed it and called Mac's the next morning. Within a few hours, having booked a UPS collection for the next day, the full cost of the return had been refunded and I was sent a notification that my replacement had been despatched (also by UPS). By 10:00 the next morning I had the correct cover as well as a packet of Don Marco's Pork Powder and one of BBQ Booster presumably as a good will gesture!
Service like this deserves to be recognised so I've also put it on my own site TopFl.at but please help spread the word!