Does Hellvape make good RTA vape tanks?
YES, Hellvape make some very popular RTA vape tanks, including the Dead Rabbit series. The Dead Rabbit RTA tank series was interesting due to the top airflow feature which up to that point was quite rare. Most RTAs have bottom airflow, but Hellvape managed to incorporated a top airflow design without loosing any of the major characteristics of a good RTA vape tank.
Does Hellvape make vape accessories?
Will Hellvape Dead Rabbit replacement glass fit Smok Prince?
It is not that uncommon for different tank tubes to be compatible with other tanks from different brands. If you read online that another tank tube is compatible with your tank, then it probably is.