Compare Dali Speakers - Mentor 6 is the baseline

Hi, I am looking for some advice. I have a pair of Dali Mentor 6’s that I think a lot of. But that only makes me wonder how much better it could be… haha so yes I have the upgrade bug. How do they compare to other speakers in the Dali line – Mentor 8’s, Helicon 800 MKII’s, or the Euphonia MS-4’s.

It seems that the speaker component between the Mentor 6 and the Euphonia MS-4 are the same, is that much difference between the cabinet and crossover? I think the online spec's are in error on the MS-4's as do not show a bass\mid-range crossover freq, but the cabinet is almost twice as heavy.

BTW, I have a Cary tube pre and a Simaudio W-5 amp.

Thanks in advance for any help on this.