Best bang for the buck Dali Mentor speakers. The Mentor 6 sits between the Mentor 5 and Mentor 8 from a 3 model floorstanding lineup. They will work well in any small/mid-size rooms and will even fill a large room with decent musical levels. This is still a current model and at almost $2,000 off its $4200 MSRP, these are very affordable floorstanding speakers to own and enjoy.