Some add-ons can be similar to others but you can choose whatever you prefer.

General Addons

Loot Log
Dressing Room
AlphaGear 2
Harven’s Extended Stats
Combat Metrics
Action Duration Reminder
Lui Extended
Harven’s Attribute Bars
Auto Recharge (and repair)
Code’s Combat Alerts
Combat Metronome (GCD Tracker)
AiM’s Synergy Tracker
RaidTimer Continued
No Inner Light
Champion Points Slots
Champion Point Respec