Ohlins are nice and smooth, but spring rates are wrong. Fronts should be 550 instead of 450 - like Xidas. Ohlins are very comfortable to ride on and wouldn't disappoint if you plan on street driving primarily. If you care about performance driving though, I'd look at something that's not just pieced together to fit the roadster - I'd look at something that's tailored specifically for this car (Xida/Fox.) Most cars I see on the track that run Ohlins have ditched the standard springs.
Other than the spring rates, Ohlins have pillow-ball top hats, which are noisy and make an audible clicking sound. Not a big deal on track but might get annoying on the street.
Since you're considering something in the $2000 range, Xidas are on the table. I can't recommend them enough. Figure out the ride height you want, and pick the package that fits. If you don't take performance driving into consideration, GS just doesn't go low enough to look good IMO.