Lighted nocks?

How many people use a lighted nock and which do you guys think is better?

looking into getting some, so i figure id ask everyone. Thanks!!!

there are so many on the market now. I use the easton one (tracer) and the lumenok. the lumenok seems to be one of the brightest and cheapest less than 10.00 each. I have found arrows and pigs I might not have found or atleast save me alot of time looking for them.

how much do they weigh? does it effect the arrow alot,and what kind of changes would you need to do to your set up?

the weight is minimal. I didn't have to change anything when I put them on. They help when practicing too. It helps you see your arrow flight and make it sure it flying true.

Thanks for the info!