Jastrow's methodology of including Palestinian Aramaic and Babylonian Aramaic in one article is certainly problematic. Sokoloff's lexicographical method is more nuanced and fine tuned, and in this respect it over shadows Jastrow in many respects. With that said, however, the price that one can acquire Jastrow through Logos is a very small amount. Moreover, to the point of it's errata, I've proof read several random pages throughout the entire volume (in all twenty pages). I discovered two errors. This likely implies that the outsourced company has a refined OCR/Editorial practice, using at a minimum of two people creating separate scans and later file comparison potentially reduces the amount of errors.
This would be a welcome addition to Accordance, as well as any other Lexicon.