Honestly, i would say TCredits is the best because it can be used ;
1. As a tender to participate on Pricebenders auctions.
2. Acquire products.
3. Market your stuff for cash.
4. Buy a gift certificate for a specific affiliate(s).Gift Certificates are brilliant mechanism for leaders who want to encourage their downline to get active with SFI!
Participate in TripleClicks Music contests and download music.