what are some tips for analyzing jazz harmony for the sake of consistency? I have a hard time with V7/IV for example, i dont know if i should just start writing them I7  but sacrifice the "ii-V-I" in the analysis by not using IV as reference. I think there may be different ways to write them down depending on if i want to learn whats going on, or if i want to be able to read it quickly in any key. 
I7 except i personally hate to use roman numerals so i write 1 with a small 7 like an exponent. no need to say it's "of 4" cuz if it's really 'of 4' then it will go to 4 and then you'll know it was 'of 4' because it went there