Bitover a year ago i started my adventure with ssd with one 64GB Crucial m3, as a hdd cache drive for my laptop (heavy, 2hdd desktop-replacement contraption), responsiveness increase was well worth it.
So year ago for my desktop build i choose 120GB Vertex 3 for my system drive ... along with i5 2500K it turned to be screaming ... boot times crazy fast, and heaviest multitasking didnt slow it a bit. Fell in love.
Warning: instant responsiveness that gets you addicted ... each time you go to computer with classic hdd makes you cringe and think "how they can put up with this slugishness" :)
About 7 months ago i specced my new samsung laptop, saved cash on processor (and choose cash and power economic i3) and put it into more ram and 120GB Vertex 3.
Turned out to be good choice, easily beats pants off more expensive i7 laptops with HDDs, hibernates and resumes in a blink, while being quite battery efficient (performance boost from SSD is cheaper in power than trying to get that performance from higher specced cpu ... strong cpus tend to be power hogs compared to modern SSDs).
As a bonus, my bios supports passing through HDD password on boot/resume, so i have power/performance efficient full disk encryption done by hardware on SSD, using my password to unlock it (yeah, it's done better in Vertexes 3 vs older Vertex 2, dont gonna bore you with proper sandforce chipset numbers)
So there it is, now you know why i'm usualy first to choose spot on map ... rarely i see anybody launching on spring map before me :P