This all depends on which enemy (regular or boss) and what weapon.
It is often good to use a special attack at the start of a fight - so that you don't "waste" the power you get from it recharging.
If the monster has a long respawn time it may be good to spec at the end of the kill to use up your bar and finish it off quickly - seeing as long spawns mean a full bar at the start of the next kill.
If you are being crashed by another team - save your specs and use at the start of the kill to get your team to hit max damage possible.
Dragon claws
Special attack.
It would be the dark bow which can hit 55,44 with 1 spec or the amardyl godsword which spec hits 75 +
Frost is the best spec to survive moreso i will choose frost :D
u have 2 kill a spec enemy
No, currently, telmomarques is the best player in Runescape.
Crabs218 is the second best runescaper on runescape he is friends with zezmia and i am crabs218 i am the second best runescaper on runescape
You can go into the wilderness and fight dragons, don't forget the dragon-fire shield, but be careful of revenants they can still kill you easy.
Enhansment
Disc
There is no best person in RuneScape. Even if there on the #1 on the Highscores, it doesn't mean there the best. Thanks to NightmareRH for this.
The best weapon is the one that causes the greatest amount of damage to the chosen enemy. Once you decide what enemy you want to attack, look up its weaknesses, and choose a corresponding weapon. For example, if it is weak to slash, use a weapons that has a slash attack, and select a slash attack in combat styles.