I don't disagree with the conclusions, but don't you have to short stroke those ssds pretty significantly in a high transaction environment to avoid write amplification?
It's too bad longevity worries are keeping them out of the no commitment market.
Not really. "short stroking" is called "overprovisioning" with SSDs, and you'll see different effects with different drives. The magic number with most consumer SSDs (the mentioned Intel and Samsung drives) do best with about 20% overprovisioning. The "enterprise class" drives don't require this - they bake in the overprovisioning. The new Intel s3700 works extraordinarily well with no overprovisioning.
It's too bad longevity worries are keeping them out of the no commitment market.