Coug's comment is spot on, CityK. I can tell you that here in Oz, Samsung warranty replacements are prompt, and they give me new drives, not refurbished stuff. (Not that I can claim extensive experience here, I've only had a very small number of failures - there is a thread called "boring reliability cross-post" where the exact number is mentioned, but it's about 4 out of 1500 or so.)
However, the same comment applies to the other products that the same company are responsible for here in Oz - Westan are also the official distributor for WD, Epox, and several others.
But I know nothing certain about US or Canadian Samsung distributors. They might be just as good, or they might be hopeless - I don't know. If I had to take a guess, I'd read between the lines of SR's difficulties with shipping and packing some years ago and think that the US distributor is not up to Westan's standard, but I hasten to add that that is pure guesswork, and I have no factual basis of any substance.