I liked Flight to Heaven: A Pilot's True Story, a Plane Crash...a Lone Survivor... a Journey to Heaven-- and Back by Capt. Dale Black better than 90 Minutes in Heaven by Don Piper.
Dale Black's death or near-death experience changed him for the rest of his life. As many of these stories are, this is as much about the accident and recovery period as it is about heaven. In Dale's case, he becomes an airline pilot and a mission pilot in Africa. You find out about an emergency landing in Zambia years after Dale's near-fatal crash when the entire country is in blackout conditions and the airport is shut down. He and the members of his team are immediately arrested and spend the night witnessing to their jailers.
I found this book to be very satsifying.