Stream Qobuz on Oppo BDP105

Cool, that sounds like a good option.  Always more than one way to skin a cat (figuratively speaking)!

I wouldn't get too hung up on all the high-res stuff.  How it was recorded and mastered matters a lot more than the bit rate. 

The DAC in the Oppo is decent, but it's probably not going to resolve the finest details and a lot depends on the rest of your system. 

The higher bit-rate recordings may sound a little different, but not necessarily better.  I've heard a lot of FLAC level recordings on Qobuz that sounded fantastic and some hi-res offerings that were lackluster.