Enterprise Hard Drives are design for 24/h use in data centres so expect good read/write performance however they may be noisy. Deal has limit of 4 per customer.
Pros: Good value at $24.75 / TB and I've heard you can register with Seagate for a 5 year warranty.
Cons: Newegg has a questionable reputation when it comes to warranty / returns. Newegg tries flogging extended warranties, so I recommend being careful to avoid that option.
Looked like a bargain until they wanted to add almost $100 in shipping.
Be careful if ordering and not in a capital city as the free shipping may not apply.