I think he was the closest to "the real thing" that fundamentalism had to offer until he died in 1980. Frankly, I didn't care so much for his preaching, but I must say that by the time I heard him in the mid seventies, he was almost totally deaf and couldn't hear himself very well. The output was something of a mumble that was difficult for me to follow. But, from everything I can gather, he lived the life. He was faithful to the very end and that's huge.
I recall that he carried on a "dispute" with Jimmy Swaggart -- a war of words the two exchanged in letters which Dr. Rice would publish in the Sword -- over speaking in tongues. Today that makes me smile.
I have also wondered if it was coincidental that Bro. Hyles started "running off the rails" after Dr. Rice died and if some of those issues he had might have been different if Dr. Rice had still been alive. I do believe that Dr. Rice was a steadying influence on Hyles.
I believe that about 1981 was the apex of the Hyles ministry and that the issues with Dave that led to his moving on to Texas in 1981 were the beginning of the cracks that would later (in my view) cause the dam to break. Frankly, I view the last twenty years of Hyles' life were tragically sad.
"Show me a hero and I'll write you a tragedy." ~ F. Scott Fitzgerald