i had the 23g version. it was much grippier and heavier than most of the darts i have thrown before. although i no longer have them, they have made me realise that i am way more consistent with heavier gripier darts. so for me it was well worth getting them.
Darts: 21g Madhouse Customs (based on Unicorn Lewis Maestro Premier)
Shafts: Target Progrip Short with standard springs
Flights: Target Vision