I know this has been describe many times.

What products of lights would be best.

These are my needs. Plan to do a 24 hour solo mtb race next year so i will need a lighting system.

Something that can be switched over to my mtb and road bike.

Looking for a helmet mounted light or lights as well as handle bar types as well.

one that is good for all weather, temperature and is durable.
as well has a long battery power, so something that can last at least 8 hours at full throttle or what ever is available.

what product lines do you all recommend best. thanks