Yes I run Koni's for 4 yrs now and they have copped a hammering and I have had no problems whatsoever.
It's generally accepted down here that Koni's and Bilsteins are the premiere shocks but they are expensive. The rest are all built to a price despite fancy features and stickers/advertising.
I have Koni 5 way adjustables but they only give 12.5" of total wheel travel and they don't come in a very big range of sizes.
You also have to remove the shock to adjust it.
The Koni's are also rebuildable for a very good price.
OME's have a mixed reputation over here even though they are marketed by ARB they are still made to a price. I do know that ARB put a lot of man hours in valving their shocks to suit a particular model. They are not just generic valve settings to suit various models.
However they do back their product 100%.
Outback Aus is pretty much the toughest terrain there is for a 4x4 especially the suspension. Endless dirt roads of corrugations with temps above 50 degrees celcius test man and machine. There are no shortage of stories about OME and Rancho failures in these conditions.
My advice is if your not looking for extra wheel travel and but are looking for a premium reliable shock Koni's are hard to beat followed closely by Bilsteins.
If your budget doesn't stretch that far OME, KYB, Rancho etc are all on a par as far as I'm concerned.
My next shocks for when my suspension is developed will most likely be these -
http://www.4waysuspension.com.au/AdjShock45.htm The Tough Dog Ralph's are as big and tough as a shock comes but they are priced the same as a Koni/Bilstein.
The Tough Dog foam cells are also a very beefy shock with a good reputation.