I had the LS25MKII, and can say the LS26 is in another class altogether. It`s a fact the LS26 beats the Ref2. You will be much closer to the Ref3. The LS26 IS NOT an upgraded LS25, the LS25 cannot be converted to an LS26, no parts are interchangeble. I use a PH7 Phono with my LS26 and am VERY satisfied with that combination.
I am not familiar with the LS17. If money is an issue, I am about to list my LS2B MKII, which I purchased new.
I am not familiar with the LS17. If money is an issue, I am about to list my LS2B MKII, which I purchased new.