The following are pretty solid. If you know any Latin, Oecolampadius. Calvin has some solid insights as well.
Albert Barnes,
Notes on the Book of Daniel.
Johann Peter Lange.
If you want to get into the criticism of the book and scholarly responses to higher criticism, Hengstenberg and Wilson are good.
Robert Dick Wilson, Studies in the Book of Daniel,
vol. 1;
vol. 2.
Ernst Wilhelm Hengstenberg,
Dissertations on the Genuineness of Daniel and the Integrity of Zechariah.