On the roadbike, I run Gazi shocks on the rear of mine, but they only make them in twin units, not monos so I can't comment on that.
As far as road use, I have never had a bike with aftermarket suspension for the road apart from the current ZRX. They were really only replaced as they had done 70,000klms and lost all there damping. For road use, I don't really need anything more than the standard stuff until it's worn out. The forks will get a service as soon as i have the cash.
I do have a good friend who steers as good as me. He has a 954 Blade. It's his 2nd one. The first did 200,000klms before he piffed it. It had an Ohlins in it, which had been in it since day 1. So 200,000klms. All with no issues. He services it every 60-70k. He then put it into his next 954. This 954 has now done 150,000klms, still with the same shock. So as far as an aftermarket shock that not only works, but also lasts, then that to me stands out as an amazing indication of quality.
I have a WP in my race bike. But, that is a 1995 model, with 2005 internals and only get's used infrequently, so I can't comment on longevity really.
I guess the good thing with an Ohlins, is that parts are usually easy to get as there are several people who fettle them. But, if I were to give an Ohlins to anyone, it would be to Steve Mudford. Stuart Winton is good from what I hear, but, for my thinking, I'd rather deal with the master than the apprentice.

PM me if you want his number.
"I hate to advocate drugs, alcohol, violence or insanity to anyone, but they've always worked for me" Hunter S. Thompson.
There are really only two questions in life. 1.Which way do i go? 2.What is the lap record?