Guys,

Don't get caught up in just writes, most operations are read and in order to utilize all (or at least most) SSD's in a raid, the stripe size should be according to the size of your files.

With a stripe size of 1MB and a file size of <1MB you'll only be reading from one of the SSD's, this does'nt take advantage of raid-0.
The main point would be reading from >1 drive.

Of course this puts a bit of a strain on the SSD's but again most operations are read, at least on a desktop computer.
Also remember that most SSD's (and raid controllers) are performing write combining to reduce the number/amount of writes.