I too found ASNETs port smoother than drZMIUI, but now drZs works great, better than ASNET 1.4.0 (i think that was the last one i tried).
I do remove all the 'bloatware' i don't need (like nova, bug report, miui backup, network location, tts, etc...).
And both SD mount with no problem on PC on drZ for me.
We'll see, i'll try the ASNET again, just tried to get some information from the first hand. Thanks for the feedback.
and on drZs stock music player recognizes external SD, which is here still listed as a bug
SGS3.. all stock.. for now