By the way, Michael, thanks for the suggestions - they bring my list of the kind of textual commentaries I am thinking of up to the following:
Parsons og Culy. 2003. Acts: A Handbook on the Greek Text. 600p. Isbn: 978-0918954909
Culy. 2004 I, II, III John: A Handbook on the Greek Text. 155p. Isbn 978-1932792089
Baugh. 1999. A First John Reader: Intermediate Greek Reading Notes and Grammar – 978-0875520957
Harris, Myrray. 1991. Exegetical Guide to the Greek New Testament: Colossians and Philemon. 344p. ISBN: 978-0802803757
Rogers. 1998. The new linguistic and exegetical key to the Greek New Testament. Zondervan.
Sumney, Jerry L. Philippians: A Greek Student’s Intermediate Reader
Hanna. 1983. A Grammatical Aid to the Greek New Testament.
Morten