Swampthing - Since you have the QUAD, I think John Corn told you the solution for a single dish solution (i.e. 4 2GHz splitters and 2 SW44's). However, it may be CHEAPER to simply setup a second Dish500/QUAD.
Another option (besides the DishPro series equipment- great - if all your equipment is 301/501/721 - the legacy adapters are expensive) would be to get 2 2x8 multiswitches with 2 Dual LNB's, then use an SW21 for each tuner. But I'm not sure if this would be cost effective as a swap from the QUAD either.
Another option (besides the DishPro series equipment- great - if all your equipment is 301/501/721 - the legacy adapters are expensive) would be to get 2 2x8 multiswitches with 2 Dual LNB's, then use an SW21 for each tuner. But I'm not sure if this would be cost effective as a swap from the QUAD either.