I need four Drives for a RAID array

Budget of about £200.

I currently have 4 250gb drives in a RAID 1+0 array. One of them failed and rather than Spend the £35 to replace it I would rather buy a load of new drives as I'm planning an i7 Build later this year and would have changed them then anyway, this also spreads the cost of my new build.

I have been looking at the WD Caviar Black 500gb at £45 each, I was wondering if there is a better deal.

What drives do you rate for speed and reliability?

The Motherboard is an ASUS P5W DH Deluxe

Also a side question, completely unrelated, anyone know if the mounting points for heatsinks of socket 755 and socket 1366 are the same?

 

hey:

I`m in oz and hdd`s prices have just crashed. I can get a 1T hdd WD now for $90. So in pounds you could get 4 of em. All sata2 drives have a max throughput of 135mb per sec and can only reach this speed while system overheads are low and the read heads of the drive are in an optimal position. Oh OPPs disregard last bable But you mentioned i7 build so sata3 should be your aim for the i7. Alas the low availablity of these drives make them to expensive imo.
On that last unrelated Question no there not the same but some aftermarket heatsinks are compatable with both designs.