@vakf I'm going to try to aim for +1lb/month on my second bulk. Because my faster first bulk, which was +0.46 lbs/week, didn't work out as well as I hoped. But the drawback, like loosh63 has brought up, is that this is essentially a rounding error. In fact a +1lb/month bulk is actually less than 125 calories. Because one pound of muscle only requires a 2,500-2,800 calorie surplus. It's one pound of fat that requires 3,500. It's more like a +82-92 calorie surplus.
When you are gunning for a +82-92 calorie surplus, there is a high likelihood you'll accidentally be in maintenance or a deficit on many days.
Also when you first start eating more calories, especially carbs, you're going to retain more water weight. Making tracking potentially difficult for you for the first couple/few months if you are bulking at +1lb/month. As Mike Mentzer pointed out, hydrate is in the word carbohydrate for a reason. And if you are going to bulk, carbs are essential. Glucose and glycogen help you push hard in the gym. And what's your body's preferred source of making glucose? Carbs. And you need to draw water into your muscles. So carbs. And creatine monohydrate helps with that too. And if you happen to eat sodium heavy food eating out and such, you retain even more water weight.
This is why its common suggested to eat at 200-300 calorie surpluses. So that you ensure you're always in a surplus essentially. The down side is that you are going to gain significantly more fat and you're going to have to spend a lot of time cutting. But not as much time as the traditional 500 calorie surplus. Or the infamous dirty bulks you've seen on YouTube. Frank Yang, Hodge Twins and recently Sam Sulek. Sam also blasts gear. Frank Yang claims natty and even he will tell you that he regrets dirty bulking. Even though his 12 year old dirty bulking video has the most views.
Because I don't like the yo-yo dieting that is involved in bulk and cut cycles, the super lean bulk (Greg Doucette calls it maingaining) is something I want to try. I've been cutting for the last 9 1/2 weeks and I lost 9.1 lbs and I'm still not lean (and this is after a 25 lb bulk I did). Depending on whether you put my smart scale in athlete mode or normal mode, I range anywhere from 14.4-21.2% body fat at 167cm 143.5 lbs (I think I'm somewhere in between. Since I think 21.2% would be pretty fat). This isn't something I enjoy doing.
Nor did I enjoy the process of force feeding myself every day when I was bulking. I'm also not rich like Frank Yang. Going on a nice big bulk is either expensive or very time consuming. Bulking on cheap low prep, even processed food from the supermarket isn't very interesting. I'm a foodie that likes to go out to eat and enjoy myself like once a fortnight or whatever. But I can't afford to order UberEats every day. Day-to-day I mostly rely on what I can buy at the supermarket or Amazon for food. And even pickup is expensive and you're paying with your time as well driving to and from the location to pick up your food. The nearest legit bakery from me is a 17 minute walk from me, which isn't too much effort. I'm sure they have yummy food but its probably significantly more expensive than the mid supermarket baked goods.