Particularly given the cost and the much shorter life span on them.
What shorter life span? Have you actually looked at the tests that have been made on it? This will be a bit of a extreme case, but: Anandtech review of Samsung 850 Pro
20GB of writes a day is quite a lot, but do you expect your 7200 rpm drive to last 282 years, or even 35 years? ADATA SX900 seems to be a MLC SSD so, but I can't find detailed information on it. You can probably expect it to last ~17 years if you write 20 GB a day.
I'd be more worried about the firmware releasing blue smurfs or the 7200 rpm drive having a catastrophic failure than wearing down SSD's.