thanks a lot for the Detailed reply,
personally i am to naive to understand if SQL Server is adequate enough 
but i take it from your word is that SQL Server + MSMQ will solve latency and consistency problems, so it is good enough.
the ASP.NET VNext shocked everyone, and all was htinking the same that owin is very far, and htis brings me to the idea, htat if Hangfire will be done in OWIN, then it should benefit from the cross platform feature the VNext will offer, and as you know SQL Server does not exist outside windows, so what is your advise? should this be a topic of its own ?