Ive used both. Generally, cracked corn is easier to deal with/drain off, etc. The taste can be different depending on what kind of "cracked" corn you are getting. Of course, "cracked" only refers to how it was processed. But most "cracked" corn is "feed" corn is usually of a lower quality and can be "dirty" as well. Literally. Cheap feed corn has a sort of "peanut" vibe to it in smell/taste that comes over. It's really the backmashing (sourmashing) in the recipe that makes it come into it's own.
Better quality (food grade maize) corn can be had ...though it also is more expensive and you'll have to chop it yourself. Honeyville grains sells yellow dent corn (food grade) in 50lb lots. You can malt this corn, or chop it (or both). They charge a lot for it, but the shipping is less than 7 dollars on as much as you want. It's taste is similar to the flaked corn.
Good quality coarse corn meal is also good flavor wise...but as even worse issues with floating/straining off, clearing etc. I bought a bag of name brand feed corn just to get some UJSM going but had been using flaked corn previous to that for AG and a couple of sugar/wash experiments. I can tell you for sure..the flaked corn is a LOT better. It's also great for doing AG mashes as it disperses easily and has good corn flavor (as opposed to dirt/peanut, etc vibe of feed corn). Course that's all relative to where you live too (ie., what kind of grain you can get as feed corn).