What are the main differences from counterparty and NXT asset exchange? I've been testing out the nxt asset exchange using http://www.secureae.com and using counterwallet. They both seem to be solid products and they both use a separate coin to do their transactions. What other major factors does one need to know before going with one of these decentralized asset exchanges?
Counterparty is based on the Bitcoin blockchain while NXT is not. This site compares Colored Coins with Mastercoin with Counterparty, it might be helpful to you: http://www.bitcoin2comparator.org/