Important to mention are the versions! This model has the same battery power as its predecessor but has different electronics and charges 80% within 1 hour. The 6DGM model has a bigger battery, so it sucks more with one charge. The 4STN has the same capacity as the 4ANM but again has different electronics so it takes 2 hours to charge 80%... It's pretty stupid how it's all divided up, but it explains the price differences... No matter which one you take, they all suck equally good and equally strong, you just pay the above mentioned differences more or less 🦊