Now, I have heard a lot of different stuff about HDDs. Some tell me that the 15k RPM isn't worth it (I am also going to purchase a bigger drive as a side). Is this true? Would it be better to go RAID with two 7200 drives? (i.e. Western Digital Caviar Black WD6401AALS 640GB 7200 RPM- http://www.newegg.com/Product/Product.aspx?Item=N82E168...)
Moreover, what about SSD? What happens if you force-shutdown an SSD drive? Is it screwed or are there fail-safes for this? Also, I read somewhere that their lifetime is pretty awful comparatively to a regular HDD, which would remove pretty much all incentive for me to buy it since I am not intending to swtich drives for many years to come.