What differentiates Hiro from other alts - what are the key differentiators? Anybody smart enough to clarify that in an clear cut manner? 
One difference is that it is thoroughly coded before launch
The key difference is that it uses the X11 hashing algorithm which I hope to make the next home for GPU miners when Scrypt ASICs become common. I am working on getting mining software optimised for X11 which will help us greatly. Also the Hirocoin blockchain is secured, so anyone can use it without fear of transaction roll backs which is becoming more and more common on small coins. Attackers throw 51% hashing power at a coin to push their own chain on orphaning the original blocks.
Please read the beginning thread carefully as all this is mentioned there.
nxt-e's biggest volume pair is hiro/btc?
I just checked and we have the highest volume on NXT-e. Not bad going for such a new coin.