The best shield for non-members is a rune kiteshield. The best member's shield is dragon sq shield at 60 def.
If it is a shield with good defense against ranged attacks your best bet is: Members: Granite Shield Non Members: Rune Kiteshield
saradomin shield
The best shield for a non member in stat wise is the Rune Kite shield however if you want rarity the You can go for one with a trim in the colour of the runescape gods.
If you have the money for it, Dragon Fire shield ( Fully Charged ) The second best - Rune Defender.
The best and most efficient way to train defense on runescape member's worlds is to train on rock crabs. Rock crabs have 500HP, low defense, and a maximum hit of 15, they also drop clue scrolls.
You would need to kill approximately 4589 guards to get from level 62 defence to level 70. The best place to kill them would be the north entrance to Falador.
Sword: Rune 2handed sword. Shield: Rune Berserker shield 100.
bronze armour with a bronze square shield is obviously the best armour in runescape not even bandos can beat bronze.
The best armor to wear in Runescape I would say is Bandos, mainly because a nice combination on Strength bonuses with Defense.
Bandos, considering it's high defense level along with Strength bonus, it is even considered better than Dragon Platebody.
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.
P2P: Toktz-ket-xil or obsidian shield (recommended), Dragon sq. shield (only if u have completed Legend's Quest) F2P: Corrupt dragon sq shield HIGHLY NOT RECOMMENDED unless you are filthy rich and prepared to buy a lot, Rune Berserker Shield