Posted a thread about this a month or two ago. Thought I'd revise the thread.
Anyways, over 4,000 B-25Js were built during the course of the war. It has a great combat record and it has a tail gunner unlike it's sister the B-25C. I really do think the B-25J will be used a lot in the Main Arenas possibly as much as the B-26. I for one would use it a lot.
Thanks for your consideration,
Warthog
NOTE: I am wishing for the Glass nose and the strafer version of the B-25J.