Having had a quick look around, the £75 for the Hitachi 250gb drive is the best around than anyone else can sell for, which is good as I prefer ordering from here, always got to me quick when I ordered before. With having a look at a PC review mag today, the Hitachi was rated best when it came to overall speeds etc, which basically confirms what everyone has been saying.
Also says that getting a new hard drive to put the OS on etc, is sometimes one of the best things you can do with a PC, especially when moving from IDE (which is what im currently using now)
I presume me only having SATA I wont cause any problems with the Hitachi?