I have Hyperpro springs front and rear. (spring on standard shock)
A set of Ohlins it isn't, but for the price it is a good improvement over standard. My issue is that I am 17 stone and with all kit on and a full top box the weight goes up more.
On standard springs I had preload up full and it felt soft and bouncy. With the hyperpro I have preload front and rear about 2 from top and I find this firmer than standard. Fork springs also come with the recommended oil as well.
Some people give the fact they are progressive springs a bashing. I think people forget this is a sport touring bike so a bit of give is a good thing in my book. helps with the crappy UK roads.
Would I fit again? Yes I would.