Hi Tony
as for now i have only 1 piece which i want to test out before investing some cold hard cash on it , the difference is really as u see it HDD bay will need more power but they have the same number of HDMI ports , so far andriod functionility is good , it can do upto 1080p display but not sure it has issues when connecting to my HD projector , but 3D experience after upscale is good (using the projector) , i am awaiting the ATV1600 with dual core and maybe get he airmouse option the remote takes abit of getting used to but i hooked up my wireless keyboard and mouse and worked like a charm , more to come once i hookup and start getting channels
Regards
GG