In 98, My brother bought Rino, I bought LineX, My linex still looks great albeit it a little faded, His Rino has had to be replace/repaired several times and is now coming off in chunks. To be fair, My linex was on a ford and his Rino on a Dodge so there is that... I wouldnt want to be on a Dodge either. ROFL
Not sure of the Rock-it, but I can say you will probably only buy LineX one time for that truck.