My advice would be to buy the Zgemma combo boxes as on vm you get all channels in hd. Even though the channels on sly are sd they still are very good quality. I've helped setup at least over 15 friends and family members and the price of the Zgema are cheaper through the Techking partners than anywhere else. Also if you are using wooshbuild image then it's nice to give a bit of a donation to the developers as well.