I have the novitec springs, and they are brilliant.
You don't really notice too much of a drop, if any an extra 5mm drop compared to the QV.
Which has me thinking the QV springs are more than a 10mm drop from the standard G.
But as for quality of ride goes, the front feels way more in control when I put my pedal to the metal.
They novitec springs have transformed the way the G handles and feels for the better.
Get yourself a TMC tuning box you won't regret it.
Faster and better fuel economy too