2 TRIM does not work like it does on an Indilinx drive as Duraclass controlls TRIM, this means you will not get the speed back as an Indilinx drive does as this would mean a very high write amplification...drives would wear out in months
3 Secure erase a drive every 6 months to free up previously read only blocks, secure erase every 2 days to get round Duraclass and you will kill the drive very quickly