Upgrading Speakers

If you have the budget, why not?   Looking for group justification?  OK speakers are always the weakest link, so go for it. 😁

I too find the SF speakers to be very well behaved and best I have heard on the shelf in the last year. For some reason, the Sonetto line is not in stores here. Lumina and then the big ones. I would love to hear them as the Lumina IIs need to stay at moderate levels. 

You must also consider the venue. it is not inconceivable that they might not sound a lot better in your room, perhaps with your equipment.

i agree with this statement from @ghdprentice 

most difficult variable to factor in in any speaker 'upgrade'

Good question. You might want to ask this question in the 'Speakers' forum as well as the 'Misc Audio' one - you might get a wider range of responses....