This book claims to bridge the gap between undergrad book and Jackson's. But I do not find it achieved the goal. It contains some good sections and I use it only as a secondary book. I still have to use Jackson's as my primary source. But that is not to say I like Jackon's. I hate it like a lot of people do, but I do not find a better alternative. Electrodynmics is the only area that I have not found a very good grad level text book for self study. I am only studying the low frequency part. My interest is not in waves. So, my comments only apply to that part.