i use the no brand 2oz mops or any no brand mops really like art primo has
the otr ones are really nice too those mini ones really come in handy
grog for life. its hard to buff and bleeds through really well and is very thin so you can get some crazy drips
the illadel one with the extra bleedthrough stuff is also very nice but my local graf store stopped carrying that so i now i stick to grog
whenever im using a mops its usally one of those really small nibs (about the size of a dime) anything else i really use a can for. occasionally ill use one of those mini 30mm nib mops there pretty nice sometimes but the nips get destroyed very easy so i dont really like to use them at night just incase the surface is rougher then it looks, ive lost multiple nips from that.
ironlak is really nice and cheap, if i order stuff offline i usally get a few cans of this
montana black is what i use most the time, my friend racks it for me and sells me it for 3 bucks a can and its high pressure so it gives me a cleaner look
rustoleum is what i use if im in need of a can and have to go buy one (since i dont rack stuff anymore) change the tip on it and there just like anything else and its also cheap so i always make sure i have a few rusto fats laying around.
just depends on what kind of can im using
ironlak: i usally use the stock caps or some pink dots
rusto: i almost always use fats
montana: i usally like to change it up since alot of caps with high pressure cans make crazy effects