for what you want the best idea would be just to keep them raw on a dv tape. If you want to save money, try buying in bulk, maybe from abroad depending on where you are.
In dubai they cost me next to nothing for box's of them.
2 x 21\" HITACHI super contrast monitors.....2 x 200 gig HDD\'s....2 x 512mb dane-elec pc3200.....TV in card (cheap and sh!t!)....3.2 P4 HT....BOARD - ASUS P4C800 - C delux (fsb 800mhz DUAL DDR 400)....GRAPHICS - ATI 256ddr POWERCOLOUR Radeon 9600XT (500mhz/400mhz)....MATROX RT.X100 real time editing card