cooking, fletching or firemaking depends how much money you have for the skill to what method you use.
What's your budget? Construction is the fastest to level to 99 than every other skill if you can afford it, it's about 105m. The XP begins at about 180k / hr if you do oak larders, and then goes to 220k or so / hr when you get to dungeon doors (74 con) Pros: - Least people have this 99, so your cape won't be another noob cook one. - A nice house is great for house parties to just chill - Can make all tele tabs for great cash, actually, is the fastest skill-related money making method - Feel sexier than having a cooking cape Cons: - Expensive (not as much as summoning though lollol) - Not much use outside of having parties and making tele tabs (oh but isn't cooking and fletch pointless too?) - No one will agree with me. Money-making potential of each skill: Fishing: Nowhere near con because I doubt you're going to fish 700 sharks in an hour. Fletching: 120k / hr tops. Slayer: D boot and whip drops have been nerfed. Before you would average about 1.2m / hr, but now don't even expect half of that. Crafting: Um I wouldn't know, isn't this a money loser? Smithing: 120k / hr or less (Unsure, but cannonballs are slow as hell and boring) Hunter: at 80+, maybe 600k / hr if you're lucky, but most of the time you're wrestling with noobs to get a chin spot
