Brice Jones has reviewed Johanna Brankaer’s Coptic – A Learning Grammar (Sahidic) (Wiesbaden: Harrasowitz, 2010) here.
I own a copy of the book and have dipped into it in places, but not worked through it systematically. I found the tables of verb conjugation bases and the concordance of grammatical terms at the back helpful for getting my head around the differences between the older naming conventions used by Lambdin and the newer ones used by Layton, but I had not looked at it carefully enough to notice the errors that Brice points out.
I used the tables to produce a table of Sahidic Coptic verb paradigms with their alternative names which others might also find useful.
Update – 23 November 2013
Mike Grondin helpfully pointed out that I had managed to replicate the verb forms for the focalising present/present II in the verb paradigms table instead of presenting the correct forms for the relative present /relative of present I. Thanks, Mike!! I have now fixed this and made a few minor changes to the presentation which should make it easier for people who are not me to follow. 🙂