I'm happy with the Minix Z64! I had a problem straight from the box that I could fix with help on the forum. Windows wouldn't install error. I had to change a setting in the register but then it went smooth. Installing MC20 went great. I don't like Windows 8.1 but downloaded the "Classic Shell" and now it works for me.
I still have to fine-tune some settings and I have to set the Onkyo TX-NR636 in it's right preset before starting the Minix. Otherwise it doesn't play sound and I have to restart the Minix.
I'm not an expert on the technical settings and have to look into certain aspects. But so far everything works great and it beats the WD TV. I have only installed MC20 and a couple of screensavers. I have no need for other software (yet?).
I was used to bitstreaming but that is not recommended and I have to look into that too. On the Onkyo it says now PCM on the display where I had all the different sound icons like Dolby Digital, DTS, True HD in red with the WD TV. Again I'm not really familiar with these differences in settings. I would like that it plays exactly what I put in. (up till 7.1 that is) Sorry that I'm not into the technical part and settings but so far I think this works great for me.