I put up a Channel Master 4248 this weekend and it's doing a pretty nice job. However the local CBS affiliate that broadcasts Hi def is lower power till at least the end of the year. I'm only getting a 40 on her so I get alot of breakup. I'm thinking of adding either a Winegard or Channel master amp. The Winegard is 28db, the CM is 26db but with a lower noise ratio. In this instance am I better served in going for the Higher DB? Is Noise not really an issue with Digital Television?