I've had a mini for a while and I would change a battery once through the day. the single magnet on the door is a bit loose and I have dropped the door in my pocket a few times, couple times to the ground etc. it works very well. I use 600 mah batteries. the grand arrived yesterday and I vaped for 15 hrs on it with a 2600 mah, then a bit this morning and decided to flip them around.
the grand's extra weight I don't mind. I stack my guitar amp on top of my keyboard amp and had the grand sitting on top of my guitar amp all night and it stays there. last night was the loudest I have cranked my amp to date and the grand stayed in reach. I like both but the grand I think is my main vape just due to battery life. so one of each is required in my opinion. adv in the grand and specialty flavour in the mini. I left the ego stuff in the van as a just in case....
I dropped the mini the other night at work, now it has a rough spot on the corner of the case. one nice thing about the mini though is those 3ml sample bottles vendors give out fit in no modding. a couple minis would have been cool too. I can't vape just one flavour all day. and I paid the same for my grand as my mini so there ya go.
no tipping a reo to fill the juice cup, just squeeze and vape. flooding an atty or carto just isn't really an issue with these. try using an atty on a boge rev2.... you have to tip that sucker upside down like a phydias. get too much and you have juice running out the drip tip, which goes in your mouth.... something we all hate