I have both mics and I couldn't say which is best, because they get a different sound, as one is omni (OKMIIR) and the other is cardioid (SP)
I use one or other depending on the venue (open/close, big/small), type of music (rock, pop, classic, jazz), each recording will be different depending on environment.
I run in the past a silly comparison running in parallel
OKM > A3 > JB3
SP-CMC-4 > SPSB1 > JB3
Same location, same music, same all. This is exactly the comparison you want (I dind't use the bass roll off so this is like using any other SP batt box).
If interested I can upload it so you can judge.
Tell us about the kind of music do you want to tape, the kind of venues you are going... etc
And also keep in mind that all replies you get might help you, but in the end, as someone sai, your hears and your experience will decide which is better, it is just a question of taste (and hears lol).
PS: Where are you from?