Budget would be based on the best laptop for the money. Ceiling point would be about 1600$.
Well if you want best for the money, windows PC's will almost always be a better value. So dell.
Apple computers are good, but they are pricey. The macbook pros have very good screens, good aesthetics, and a different operating system. But performance wise, you can do a lot better in the windows side. They are also very hard to modify and fix.