Personally I would go for the 80's you can always add ehw sum later. I started with the m3's upgraded to the M60's then to the M80's. I wish I would have just bought the M80's to begin with.

M80,VP150,QS8,ERD-1,XPA-2,XPA-5,UMC-10,PS3,XBOX360,Dish VIP622,PB13 Ultra,Panasonic PT-AE3000U