After spending 2 days reading reviews on this forum, I went for the Yulong D100 MK II for $422 including shipping, awaiting for delivery. HP-P1 is praised a lot but unfortunately it can't be connected to the desktop.
I have a Digital Audio output in my iMac and a DAC / AMP with optical input is a great plus. I rarely use the IEMs when I'm busy ( either at office or home ) so portability is not an issue.
Dac Magic Plus had very mixed reviews so did Maverick Audio Dac.
I hope it was the right decision anyway, I still have to figure it out myself before throwing a $2K on a top tier Dac/Amp. One thing for sure.... I'm not getting married anytime soon