Tough to compare the Lumin T2 to the Cary 700 if the Cary is anything like the DMS 600.
You cannot just swap players. They are so different, to get each of their best you have to match the electronics, speakers and cabling.
The Lumin is super detailed, The Cary is much more full sounding but not as highly detailed. So if you have a system that sounds great with the Cary it will get tiresome with the Lumin. If it sounds great with the Lumin, you may find it not as exciting with the Cary. Both are great players. The Cary will be much more forgiving in a system, but the Lumin will sound fantastic with properly matched cabling , etc.