Can’t really advise you about the best media player for “apps” (i did’nt buy my WDTV’s for “apps” only personal media playback)
If you love “apps” grab a Chromecast from JB-Hi Fi $49 AUD (got one given to me, works pretty good)
If you want a WDTV with Netflix … then you’ll have to hunt around for the WDTV Live Streaming $99 (last time i looked)
The new WDTV (around $149 AUD) doesent have Netflix …
Apart from that, there’s lot’s of media players out there eg, Roku, Amazon Fire TV, Chromebox etc so, you’ll have to buy online and hope they ship to OZ
P.S. Happy Australia Day 
oops … forgot about my Raspberry Pi’s (around $40) with XBMC installed … plenty of apps (Video Add-Ons) available for it (about 861 … last time i looked : https://superrepo.org/kodi/list/categories/video/?page=1 )
