I'd heard about pairing shocks for top level racing but it's not necessary for road use.
Anyone who thinks they drive on the road at, or over, the limit of a good set of shocks is delusional....dream on. They probably drive beyond the car's, or more likely their own, capabilities.
I've been saying for ages that a new pair of shocks, whatever the make....even originals, transforms a car's handling. They don't have to be Konis but these STRs are a very good price, I'm going to try a pair.
Obviously new shocks will generally likely be better than old ones. However, I'm not talking about driving at the limit, more about balancing your car's handling between all of its' wheels - which should surely benefit anyone.
Regardless of the facts and in the absence of useful info, people will believe what they want to believe either way...
Anyway, here's the opinion of the experienced shock expert from the web-link quoted earlier:
"Koni's quality control on the Yellows is such that the odds on any two shocks with the same part number matching forces are very small - there's quite a bit of shock-to-shock variation. But bought as a group buy and then dyno matched, it is possible to put together matched sets. Be aware that I've seen Koni Yellows with the same part number that matched perfectly when one was 1/2 turn off full hard, and the other was at full soft - I consider the adjuster knob a way to match shocks on the dyno, NOT a tuning tool."
"..when I was selling Koni packages, it was Standard Operating Procedure to buy a bunch, dyno them all, and pair up the close matches. Ten shocks would usually produce four sets and one oddball pair.."