You're not terrible for saying that
! I know exactly what you mean. You could also try switching to NV directly instead - some ibs/ibd dogs experience miracles w/ raw. You could start w/ freeze dried first for about a month, then go to the Raw Frozen Medallions. Here is NV's website:
Natures Variety
Click on Raw Diets. I can get this food at several stores in Phoenix; they have a really good store locator on their site too - I just put in Irving, TX - and a whole bunch of places came up. I've been in your shoes - and it was horrible watching Marcel go through what he went through - so feel free to ask anything.