Hy Costas,
i will try to quote the G55.
Onestly never heard something similar sounding like the G55 (compared to my previous equipment and those of my friends which have LINN and ROTEL). As you can see my opinion is not because i'm an Meridian owner, but i compared heavily with other brands!.
The designed space (or soundstage) is wide and realistic, overwhelming details, very equilibrated and more than enough power (at least for my usage). I can ensure you that my listening room is far from being good (clean and hard surfaces everywhere). What did me surprise is the immediate good sound without tweaking too much.
Due too the fact that also you are now a proud owner of G68-G55 let us know your experience. By the way which cables you are supposed to use in your system? I use the VDH FIRST ULTIMATE for digital and analog connection.