I'm looking for a mod with a clock on the display. I would like one that doesn't need the clock reset every time you replace the batteries. I'm looking at the Smoant Cylon, the Aspire Skystar and the Vaporesso Revenger. Which one would be my best choice? Is there any others I'm missing? I steer clear of Wismec, Joyetech and Eleaf. I've been burned too many times by that company. Any help would be appreciated. Thanks.