Our TV is a SB Duramax 2500 HD with a PullRite Superglide auto-slider. There have been no worries about hitting the cab on tight turns. I found that the SB actually has a higher GVWR than the LB by a few hundred lbs. I know that is not a lot, but a little extra cushion is always nice. I have owned a TV in the past that was a LB and I do like the maneuverability as my these are my daily drivers as well.
2016 Jayco North Point 375 BHFS
2015 Chevrolet Silverado 2500 HD Duramax SB SRW