I think that its pretty much just luck, I don't buy the worst cheese, I've goten real close to that trophy though!
I think it makes some difference, it should... Even if it doesn't I still wouldn't use the worst cheese, maybe cheaper ones have a higher percentage of melting? Does anyone know?
The cheese melts? Well that's certainly not any good, then, huh? What makes it melt, just random bad luck?
I play it every day and have never had it melt on me. I also use the cheapest cheese, just gong for some easy NP. I usually just go dive left over and over. I win a cheese every other day or so and break even at least most days. I'm not expert on it though as I've never gotten close to a trophy.
The best cheese to use are Brain Cheese, Tyrannian Dung Cheese, Quadruple Fudge Cheese, Brick Cheese, Space Cheese and Angelpuss Cheese. For most of these using Dive Left is very effective. But if you want to get a trophy, you'll have to depend a lot of it on luck.
better = slightly higher luck/results with dive left I can vouch for dung cheese having something like 2 to 3 success every 2 days but I've not even gotten close to the trophy with it and I make money with spicy juniper