Be aware that while 32 bit resolution sounds attractive, in practice it doesn’t really matter beyond 24 bits. Even the best 24 bit DAC won’t have more than 20–21 bit effective resolution. This translates to about 126dB of dynamic range, meaning you would have to listen to your music at rock concert or jet engine levels in order to be able to hear any quantization error.
Personally, I would not choose a streaming service on the availability of 32 bit recordings. I do use Qobuz and am very happy with it. The Topping or any other DAC that handles PCM encoding will work with Qobuz just fine.