I myself am a hybrid pure.
My current stats are
59 Combat
50 Attack
73 Strength
1 Defence
82 Ranged
82 Magic
72 Constitution
12 Prayer (For Desert Treasure/Ava's Accumulator)
1 Summoning
With those stats, I have no trouble beating people to the ground with my giant hammer which I call my granite maul and then if any trouble arises, such as a rush then you can blitz them and reverse rush.
It's up to you really, it depends how YOU prefer to PK, with melee, with ranged, with magic or with them all.
You pick and choose your favourite combinations and as long as you're happy, then you can't go wrong.