I bought one of the Ohlins shocks and sent it to Dan Anderson at Traxxion Dynamics to test (all of my suspension testing and tuning is done by Traxxion and final assembly and testing of each Penske is also done by Traxxion). The spring is SUPER soft (970lb) compared to what I spec on the Penske for racing, and thus, the compression valving on the Ohlins has to be very stiff to make up the difference. They also only make 1 spring rate, so every person who buys an Ohlins shock for the R3 gets the same spring. This is how you get a "high performance" shock like the Ohlins for $700 or less. However, the rebounding valving is very light, too light to install a stiffer spring without changing the valving... So my conclusion on the Ohlins is that it's built as a street rider replacement, not a race shock. It also doesn't have as much length adjustment from stock to lengthen it as much as I spec the Penske or Spears specs his JRI. It will work just fine for street riders from about 120-200 lbs, and it will work fine until you try to push it. The only racer I've seen doing well with it weighs 110 lbs, which matches the spring pretty close, so he can open up the compression valving and it works. A friend of mine races a Graves bike with the Ohlins shock and 970lb spring and he weighs around 185. The compression valving is so stiff the shock feels rock hard, much stiffer than my Penske, even with my 1200 lb spring. Another guy I know has been racing the Ohlins, also at 185 and he's tearing through rear tires almost every race. He's now sending the shock in to Traxxion to revalve and respring to match a Penske.
If you're a street rider, the Ohlins is a fine upgrade that looks really nice and comes with a nice bracket to mount the remove reservoir. If you're a racer on a budget, get one of my race spec rebuilt R6 shocks, which is built and valved to match a Penske as close as possible, or spend the money on one of my spec. Penskes or a Spears JRI.
Jesse