You get what you pay for when it comes to shocks. IF you want to tune your ride, consider the double adjustable type from various companies -- Vikings are made by the originators of QA1 (which previously bought out Carrera), and the Vikings are only available as a dbl-adjustable shock, keeping their prices reasonably low for this type of shock.
Otherwise, I'd simply go with Bilstiens (non-adjustable). KYBs aren't bad, but better are available... pending how much you want to spend.