LED Light bar Suggestions

Im wanting to install a led light bar right below my roof and clamp it to my roll cage. There are a ton of LED bars on the market so I’m really overwhelmed with a decision.. I’m sure there are other threads about this, but I was having a hard time finding any with info.
So here’s my questions.. What is a good bar? (best bang for your buck)
Is the 40" led bar the size I’m needing?
As for install… I understand the rocket switch and fuse, but what’s the purpose of the relay?
Any info, links to info and pics of install instructions will be helpful.
Thanks!

LED Light bar Suggestions

Im wanting to install a led light bar right below my roof and clamp it to my roll cage. There are a ton of LED bars on the market so I’m really overwhelmed with a decision.. I’m sure there are other threads about this, but I was having a hard time finding any with info.
So here’s my questions.. What is a good bar? (best bang for your buck)
Is the 40" led bar the size I’m needing?
As for install… I understand the rocket switch and fuse, but what’s the purpose of the relay?
Any info, links to info and pics of install instructions will be helpful.
Thanks!