That's pretty fine. If you are paranoid, get a laptop cooler perhaps.
The RAID0 with another Agility 3 will be faster in this case, much faster in fact.
But if you aren't going to use it for the applications that utilizes that much sequential speed, then I'd suggest you don't bother at all.

More over, you only have 60GB of space... and most applications that needs the speed requires a much larger amount of space.

And finally, no — you aren't going to feel much of a difference in normal usage between RAID0 and the Vertex 4.

If you need the extra SSD space, then yes... get the Vertex 4. No point RAID0 on a 60GB drive IMO.

If he decides to get a new Vertex 4, what does he do with his existing 60GB drive?

Waiting for my Samsung 830 128GB now. Hopefully arrived tomorrow.

beetle_larvae ssd import from Singapore if not wrong, need to send back to Singapore for warranty claim

there is no Samsung distributor in SG

means anything happen you have to taopao urself or pay him to send back to US