Raid 0 is good but remember if you are going for it you better be prepare i suggest you get another HD and have all your storage programs e.c.t in that HD and use the Raid 0 just for the operating system, gaming e.c.t. Cuz if you store all your data in the Raid 0 and one of the HD fails or damaged you will LOSE all the data.
Yes get 2 exactly HD don't take chances it may work with diference brands but remember that no all HD have the same average seek time e.c.t.