Mark it depends on what you want. Do you want distance and / or spread. Also what distance do you want as everyone's idea of led lights output varies.
I have 2 x 185 led spots for distance and my old trusty 20in light bar for spread. The distance for the spots are about 300 mtrs which is enough for me as I am not concerned what's 800 mtrs ahead of me but what's close to me.
You can pay for brands such as ARB etc but honestly they are all out of China just different factories. The 20in light bar, now 3 years old, I sourced from China when I was selling them and they supply sunyee who is who I got my 185 watt ones from. I did have an issue with the original ones, 185 watt lights, as the metal casing on the lights was too soft so the screws holding the light to the bracket would wear out and the lights would just drop down. I contacted sunyee and got a brand new replacement as they have a 2 year warranty. No issues with the new ones but I did add some lock tite to them to make sure.
Do not go with light bars with end brackets as the weight of the light bar puts undue stress on the brackets and they break. I had a 43in curved light bar with end brackets and the brackets broke in no time due to the weight of the light bar and the corrugated roads. If your looking at a light bar make sure the brackets are situated in the middle so that the light bar can be supported properly.
With over 2 and half years traveling corrugated roads I can vouch for real life usage and testing.
I don't have any shares in Sunyee.
Personally I would not go for expensive lights but that's my opinion only. I cannot see the point.
As mentioned setting up a 4wd with lights is a personal thing, what works for you might not work for the next person. Best way is to find someone who has a set up on their vehicle and go for a drive with them to give you an idea.
Mark