I had many Raptors over the years, and recently got SSD - even value SSD beats last gen raptors, badly. It is like jump from older 7200rpm drive to raptor - that is how it feels to jump to SSD from raptor. Beside that, 4 raptors are very noisy, any 4 mechanical drives are. On the other hand, SSD is noise free, which gives effect that everything is instant - you never hear hard drive grinding.
forget about sequential read/write if you are not doing multimedia or such, it appears that it is too synthetic. That's the best explanation I got for why does SSD seem to to casual job (run windows, internet, some games, some development tools) very well. what matters is random access and ability to scale well with multiple requests at same time.