Snooze I didnāt realise you havenāt purchased your Bianca yet. Whatās your budget?
Bianca, Minima and Mara V2 - all are great machines. What ever you choose, you will be very happy in the end. If you add a paddle to Minima, there isnāt much that will separate Bianca and Minima except the noise.
Water sitting on a boiler isnāt an issue. You do make lattes, donāt you? Draw a cup of hot water after steaming. Flush out the water every 5-6 weeks and use that for cleaning. Even if you donāt steam daily, you know it is there should your taste buds change in future.
Would the noise bother you? Get the Bianca.
Are you worried you will regret buying Minima what ever may be the reason or do you think you get the upgradeitis sooner than you think because of a wrong choice? Get the Mara X, so that you can sell and move on. Better still, grab Bianca and make it an end game!
The more you think, the more you will be confused. Please take your time, itās your money, buy what you think fits your requirements and donāt suffer from buyersā remorse. GL š