I'm looking at getting a tuner for my 2010 duramax and I'm just wondering what other brands work good other than the H&S? If found superchips, bullydog, edge and I'm sure a few others for really cheap. What are your experiences? I'm just looking for a little better fuel mileage. The truck already has the DPF deleted and I'm putting on a single Magnaflow 4". Any info is very much appreciated. Thanks.