How much would you like to spend? You can spend between 50-1500 depending on what you want
What are the lights purpose? Eye candy or CycWash or StageWash?
New or Used?
Particular Brand (Remember cost)?
Let me know if you can answer these questions then maybe we can suggest a fixture you better suit your needs.
Do you mean par bars like one would tour with, only wired for LED? Or an LED bar shaped product? Or something else?
A better way to phrase the question would be to describe the thing/place to be lit, explain what you have, and then list what is wrong with it and what you want to improve.