i just got directv and got the h20 hd boxes, i have three need one more, is the h10 the same thing or what, i have the new 5 lnb slimline dish for the locals or mp4 ,what does the h10 box do, does it not recieve mp4, let me know the diff. i need to know what the diff is between the two recievers and is it better to set the recvr. to native resolution or leave it on 1080i like if have it thanks for the help.