I said they are lighter, smaller and less costly than round cells, I, for one, never said they are better.
It is well documented here that Multistars should be used in a lower-discharge system and if you can get a higher discharge rate from a "Dolphin" battery, I can only say that you must not be carrying much capacity. Part of the beauty of the Multistars is that since they are smaller and lighter, more capacity can be carried for a given space.
I wonder if you have optimized the charging procedure for LiPoly I am on record stating that they should be bulk charged and that the pack should not be constantly "broken down" to charge. And If it takes "one to two hours" for you to go from 3.90V/cell to 4.10V/cell, I can only surmise that you are still using a low-powered RC "toy" charger. I can take my 20,000 mAh pack to top Voltage in 20 minutes using a Mean Well HLG power supply.
I''m not sure it's fair to criticise the Multistars without detailing how you are using and charging them
And please It's tedious to read "blowing up" comments without any relevant examples. There isn't one report of Multistars catching on fire here, let alone "blowing up. More garages are burnt down w/ a gallon of gas than LiPoly.