Sorry if this has been gone over a thousand times but..I'm getting the 1 hopper and 1 joey installed Saturday. I heard the HWS is better unit. Is this true? Should I get one with sling or is original fine? I have a vip922 with sling and it's pretty cool. Just don't want to be getting something their trying to get rid of. Maybe the HWS is more money. Any info would help