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
Stems: Target Pro Grip Short
Flights: Target Lewis Pro100 No.6 shape