One of the few advantages that melee has is its price. Items such as the Saradomin Godsword and the enhanced excalibur offer certain healing capabilities. If you're looking to RuneScape Gold do this thing with, for example, magic, you'd have to switch to ancients and hit some blood spells. Of course, this is only applicable to lower-to-medium skilled players. It doesn't matter the amount you invest in scrimshaws, auras, or harmful weapons.
They are, in my opinion, the best. They are able to cover the full scope of RuneScape's missions, in every area. There are some odd ones. The title "The Annihilator". Does that refer to post-quest content? Perhaps a name from a new slayer? If it's post-quest content, it is logical to complete the quest to it's full.
These are not intended to be accomplished in RuneScape. These are secondary objectives that allow you to gain skills or experience that you have already been trained to 99 in order for you the Completionist Cap. There are other ways to train and they should be reserved to the Trimmed Cape.
The Trimmed Cape is, for all intents, the base Comp Cape. But, it has the additional requirement to complete every RuneScape minigame. The player has a few options to unlock hidden lore, including the Dragonkin journals as well as Scabarite notes on research. However it is not the best option as post-quest content can be found in both caps.
Which skill is the most profitable at 99? These are the three abilities I would think about. They do not require years of Buy OSRS Fire Cape experience like theiving and runecrafting.Also, think about what the most porifitable thing you could get.