For my first bulk, I eventually fell into the balanced approach. Stick to the meal plan 6 days a week (750 KCAL surplus) and have a sorta cheat day once per week on my hardest training day. On the cheat day I'd let myself have up to a 2000 kcal surplus, but the way I'd work out is I'd usually just eat my normal food out of habit and get to full to have the cheat day so i'd end up pretty modestly most weeks (Maybe 400-1000 extra calories of junk food type stuff).
I'd personally hate the idea of dirty bulking as long term habbit, I'd be worried about the icky bloated feeling, mal-absorption of nutrients, and excess fat gain personally. It's such a pain in the ass to have to diet as well, especially if it's avoidable going in. Not to mention most people I see posting about dirt bulking aren't exactly eating chicken and oats, but much more palatable food that isn't exactly healthy or easy on the body especially in larger amounts and in a caloric surplus.
Another concern I'd be worried about with dirty bulking is it causing insulin resistance to sky rocket. John Meadows talks about how if we get insulin resistant less of the nutrients we consume get shuttled into our muscles and more of them get shuttled into fat instead. With that basic premise, wouldn't dirty bulk being doubly bad from a body composition stand point? You'll shoveling food in, which is making you insulin resistant quicker. Which shuttles more of the food into the fat cells, which since your eating more calories that would be even quicker fat gain. A negative feedback loop?
So to summarize my preference is leaning very strongly for the clean bulk with a sorta of cheat day once per week at most. I also want to able to grow longer so I expect as I advance as a weight lifter I'll probably get tighter and tighter with the bulks as I get more satisfied with my LBM and also leaner since muscles look a lot better when they are not covered with fat.
I think we can all agree that dirty bulks are probably more fun thou :silly: