BTW, I saw a news article today about a brand of SSD that was claiming
to have the price effectiveness of MLC-type chips, but with lifetime of
4TB/day over 5 years.
http://www.storagereview.com/anobit_unveils_genesis_mlc_enterprise_ssds
which also links to:
http://www.storagereview.com/sandforce_and_ibm_promote_virtues_mlcbased_ssds_enterprise
which is a similar tech - much improved erase-cycle-counts on MLC.
No doubt this'll be common in all SSDs in a year or so then!