In (at least) one of the newer editions there are some mistakes taken out.
I think you can buy any version of ABOK, they all have some mistakes but they have so many more good things, they are worth the money.
Only buy a rare version for a rare books price if you are a book collector.
If you can find an ABOK for a secondhand price, grab it, do not wonder about the edition.
If you have to go for a new book, you will have to take whatever is in stock.
For those who would be able to use the german version, I have been told that there is a cheap version in German translation on its way to the market. I have been told somewhere around 20 euro, ($25?)
I have not seen it yet, and I do not know when it will hit the market, if it ever does.
Willeke