Ah, bummer.....I wasn't sure of the dynamics of purchasing from a US seller.
In the US, a REF 6 is usually between the LS 28 and LS 28SE in price. I haven't heard the LS 28/28SE but if you were going to stretch all the way to approximately $6000USD then I would go for the REF 6.
Below that, the LS27 really stood out for me. I had it paired with a PH8 phono which was also fantastic.

