Yea the 853T certainly doesn't have the endurance that either the SV843 or SM843T have. The SV843 is head and shoulders above both in that regard. The SM843T is a major step up from the 853T still. It all comes back to, I wish I didn't miss that SV843 deal, lol. Now it just feels wrong to purchase the 853T for the same money.
I have not seen any SV843s for anything close to that price... you will have better luck with the SM843Ts for a lower price than the SV843s... That said 0.3 WPD on a 960GB drive is still a shedload of writes.
Edit! for clarity of thread.
Since there seems to be some confusion on the endurance of these drives...
Samsung's naming convention is probably partly to blame.
PM853T (TLC Vnand)
RWPD 5yrs*365*0.3*0.960 =525.6 TB
SWPD 5yrs*365*1.6*0.960=2803.2 TB
SM843T MLC VNAND
RWPD 5yrs*365*1.8*0.960 3153.6 TB
SWPD 5yrs*365*11*0.960 19272 TB
SV843 MLC VNAND
RWPD 5yrs*365*3.6*0.960 = 6307.2 TB
SWPD 5yrs*365*22*0.960 =38544 TB
For read workloads they should all fairly equal performance.
PM853T is faster than the SM843T on writes but slower than the SV843.
410/360/430 MB/s respectively.
Now... how much do you write to your drives... My 6yr old laptop... not much. 1800GB written to that 160GB X25m.
I don't think I have written more than 10TB to any of the SSDs I have used in my desktops over their used lifespans. And drives typically outlast their ratings. While the gap is huge between these drives... That is still more writes than you would probably do for most workloads.