I would stick with Qobuz, personally. The best sound of all the current streaming services, IMO.
If you're using the Bluetooth connection to the Node, why not correct directly to the Topping, as someone else suggested? Otherwise, for an ethernet/wifi streamer, the Inuous looks like a good bet, with the most reliable software. I have not used one myself.
Another option is a Mac Mini running Audirvana, which I love. Audirvana connects easily to Qobuz and has a good remote app. For $600, the Mac Mini gives you a ton of flexibility in terms of playback software and connectivity. Combine it with a Pi2AES Mercury V3 streamer for $500 and you've got a first-rate digital system. ;-)
But in terms of simplicity, biting the bullet for an Innuos seems sensible.