I have always kept my Bandits in low 70's with great success. I have kept Bandits off and on for the last 5 years. I personally would never attempt to keep a Bandit long term in a tank with a temp higher than 75 degrees. Yes, others have kept them at higher temps, but that is not the norm for these fish. When you keep them at higher temps, their metabolism increases and they eventually waste away, or they get bacterial infections or some other phantom issue that leads to their demise. At lower temps, metabolism is slowed and you can fatten them up a bit. Proper collection and acclimation is an absolute must with these fish due to their deep water collection. I always got mine diver direct from Hawaii. They do better minus the usual wholesale process.
BTW, I have never had a Bandit jump out of a tank. However all fish have the capability to do so. Throw a mesh top on the tank for good measure. Pond netting is perfect.