I have got a Gigacube HD Quad plus with 2 sat and 2 cable tuners. I have a cable feed with a 2 way splitter and a 3.6db and 4 db rating on it. What I want is to get both cable tuners up and running to record and watch different channels. Do i need to worry about the db ratings when I get a 3 way splitter? Also what brand to go for? The existing one is ecoline but cant find them online in the UK but can see Labgear and Konig.