Actually, you may be disappointed if you buy SSDs for the boot speed. HDD manufacturers have done a remarkable job optimizing that. And in the case of an OS like Vista, the benefit from an SSD's low latency is dwarfed by the benefit from an HDD's raw read speed. Those 640GB Caviar drives are apparently one of the fastest booting HDDs/SSDs. (unless you go incredibly high end)
SSDs have been proven enormously helpful for games, though; especially games where you can't possibly store all the textures in memory, such as... Crysis.
I think your post is either terribly misinformed, or you are overstating yourself. I have no idea how can say a 320GB platter drive (and there are 500GB ones now too...) could possibly hope to outperform all but 'incredibly high end' drives. Look at the OCZ Vertex, or G.Skill Falcon (or the supertalent drives etc based on the same controller). The smaller sizes are around the price of a velciraptor (admittedly smaller though, but still large enough for vista + some apps), and they blow the velciraptor out of the water. Don't just take my word for it: http://www.overclock3d.net/reviews.php?/storage/ocz_vertex_120gb_sata2_ssd/7 And that crap about it being enormously helpful? Sure it definitely is desirable, but not even that benchmark you posted is fair for crysis (as they admit in the article...). For the vast majority of the time, SSDs only improve load time (note your floppy RAID array does not count).
It's a poor workman who blames his tools.