Best hard drive manufacturer ever?

I swear western digital is run by geniuses. I had a 650gig SATA III drive that started ticking, so i sent for an RMA thru WD. They sent me the 1.5Tb model of the same series, which apparently is amazingly fast. Checked all the paperwork to check for error on my end, and they just decided to send me an upgrade for my troubles. Their smart as hell too cause since they sent me that drive it compelled me to buy the same drive on newegg to setup a raid 0 config while im still able to ghost my info from the 650. Anyone ever have an experience like this with an RMA or return?