Going from what's available now on Agon that I've heard, and given it's with the i-7 (also familiar with), I would investigate:
Sony SCD-1 Super Audio CD player
Cary Audio 303/300
Ayre CX-7e
Bel Canto CD-2 player and transport
Of the above I would give a special nod to the Sony and the Ayre, since I've heard them with Sim gear before (but not the i-7). The SCD-1's main drag is that it's got slow load times, but it's a classic piece of kit and friggin gorgeous. It has balanced outputs, but you may want to investigate further if it's truly balanced, as I seem to remember, when I owned it, reading that it's not really balanced?
Sony SCD-1 Super Audio CD player
Cary Audio 303/300
Ayre CX-7e
Bel Canto CD-2 player and transport
Of the above I would give a special nod to the Sony and the Ayre, since I've heard them with Sim gear before (but not the i-7). The SCD-1's main drag is that it's got slow load times, but it's a classic piece of kit and friggin gorgeous. It has balanced outputs, but you may want to investigate further if it's truly balanced, as I seem to remember, when I owned it, reading that it's not really balanced?