I bought Hohner Rocket Amp in all keys. All harmonicas are well tuned. Was I just lucky? It feels like Special 20! I play with soft pressure and regapped some reeds (on the lower end) on the harmonicas. Maybe the setup of the reeds is for hard pressure players with the text "particularly loud"? Without regapping it's not for me.
When I play a well setup old Special 20 and a new regapped Rocket amp the Rocket Amp sounds a little bit cleaner. The sound is cleaner than Manji. Rocket Amp has the feel of a very good Special 20 in my hand but not the exact sound. I like the sound of the Rocket Amp! A good harp. I guess it will last as long as other Hohner harmonicas. If you like Special 20 and can live with a green comb try one Rocket Amp. It's a difference of 13 euro. A well tuned good sounding harp.