I had a Aurender A100, Cary 600,700 and a Lumin T2 so maybe I can help.
The Aurender and the Cary both use AKM chips. While the T2 uses the Sabre chips
You can’t beat the Cary for features. Wireless,Bluetooth, can be used just as a streamer, SD card playback etc. Swiss Army knife. Will always sound good, never fatiguing . Their app is good but quirky. For me it just didn’t dig deep. I moved on to a Bricasti which just sounds much bigger and lively.
The Lumin T2 sounded great on 90 percent of the music played on my system but with the Persona 5F beryllium midrange and tweeter could get edgy, ,but if the rest of your system is on the warmer side of neutral it may work well.
Have not heard the A200 but I assume it will be similar to the 700 but have the advantage of local storage which the Cary lacks.
Really comes down to features as they are both great companies
The Cary’s remote is the best I ever used as it will run everything if you lose Wi fi. The Cary’s manual is 80 pages and written very well.