If you want a H or J model B-25, go for Hasegawa.
Italeri will get you a B, C,D, or G. I have the boxing for the PBJ-1D with ventral radome and torpedo. Not as good as Hasegawa (older kit, raised panel lines, etc) but better than Airfix and generally accurate.
Kevin Johnson Ypsilanti, Michigan USA
On the bench: 1/72 Fujimi Ki-36 J-BAAR