A vibrating plate between 11 and newer T20, the choice fell on 11. Their price is almost the same, in T20, a removable battery and a more recent design are pluses, but I didn’t take it because I didn’t like the automatic turbo brush, which itself regulates power depending on the surface, all the same, I want to manage this moment myself, plus they had a brush marriage at the start, many wrote that they break in the first months due to the assembly curve, but the removable battery is not a panacea for me, for 11 one charge is enough to clean the apartment for sure enough and if you need to replace Akuma, unscrewing a few screws is not a problem.