Three new coins with interesting features have come out around the same time, each with an ICO/Pre-sale. They each have their differences and similarities. I'd like to start a discussion about these coins. Which of these coins seems the most promising and why?

Links to coin threads

Crypti: https://bitcointalk.org/index.php?topic=654463.0
Syscoin: https://bitcointalk.org/index.php?topic=587080.0
Viacoin: https://bitcointalk.org/index.php?topic=699278

Very brief overview

Crypti:
New source written in node.js
Implements three new proof systems (Proof-of-Purchase, Proof-of-Time, Proof-of-Identity)
Custom blockchains and SDK
Non-anonymous devs
Pre-sale complete (~750 BTC raised for 100% of coin supply)

Syscoin:
Scrypt-based Proof-of-Work
Decentralized markets, secure data storage, and digital certificates/assets on the blockchain
Non-anonymous devs
Pre-sale underway (hopes to raise 1500 BTC for ~15% of coin supply)

Viacoin:
Scrypt-based Proof-of-Work
Implementation of ClearingHouse
Pseudoanonymous dev (btcdrak is a well known trader and member of bitcointalk, but I don't think his real identity is disclosed)
Pre-sale complete (~610 BTC raised for ~10% of coin supply)




Disclaimer: I invested a small amount into each of these three coins during their respective pre-sales.