There are only two players left in town when it comes to traditional mechanical 3.5" hard drives: Seagate (absorbed Maxtor and Samsung) and Western Digital (absorbed Hitachi/IBM).
The warranty periods dropped when the flood hit. I think it was mostly a quality control issue...they lost their baseline for return %'s and needed to reset. Since then, the warranty periods have gone up a bit but not at the pre-flood levels. Usually, the 1 yr warranties are for external drives that contain a power supply and it's the crappy psu that causes the lower warranty period.
Prices jumped when the flood hit (supply/demand) and haven't dropped to pre-flood levels because of the consolidation - when there are only 2 suppliers, they don't have to be as competitive. Bad for us, but good for the hard drive industry...prior to the consolidation all of these guys were only profitable sometimes...high competition meant low prices which meant crappy margins. Ironically, post flood and consolidation, WD and Seagate are rolling in the profit dollars on less sales units.