If you don't know whether or not
you need TWAIN support, you almost certainly don't.
It isn't a ScanSnap, though, so get it only if
you need TWAIN.
But if you do
need TWAIN support, the Epson WorkForce DS - 520 is probably the best option.
If you don't know whether or not
you need TWAIN, don't worry about it.
There is only one exception to that recommendation: if you know
you need TWAIN, you should look for another scanner, like one of those I have mentioned above.
Not exact matches
The ADS - 2000 comes with PaperPort SE (though you don't
need to use it), which is barely a step above crapware, and it definitely doesn't make up for the lack of
TWAIN.