I have had Grand Piano, Cremona auditor, Auditor M, Guarneri H and now Franco Serblin’s Lignea. Once I even bought their smallest,Toy speaker, just for fun, while I was waiting for some other bigger speaker. Also, on many occasions listened the others models as well. Have not heard Lumina speakers.
I would always recommend slightly used, ’better’ speakers, than new ’lesser’ model.On the other hand, I believe not many SF fans buys their speakers to listen music that you listen. Its not that SF cant play rock music, but its strenght lies in reproduction of tone and finesse of unamplified music, jazz or classical. In that regard, like @ghdprentice has already wrote, my advice would be Cremona M, as it is the speaker which can ’rock’ and in the same time retains many subtle qualities of their more famous models. Here in Europe, original price of Cremona M was around 7t Eur and it can be found used between 3 or 4t Eur. It is still more expensive than new Lumina, but Imho, should be worth it...if your amp can drive them and if your room is big enough...
Edit: just looked your amp and room...the 60w integrated might not be suuficent for higher volumes with Cremona M and I would not advice to put the speakers on longer wall, as you will not have enough place between you and them (you need to move them away from the wall and to leave enough space behind you) In fact,with that configuration (that amp and that position) I would look for some 2 way monitor...but that solution might not be what you want, regarding music that you listen....it would be best if you could try (any) speaker in your room prior buying....