Aurender for sure. It is an audiophile grade streamer with sound quality, build quality, support and a great app for navigation. I own two Aurender.
Just a note on sound quality differences between, say the N200 and N20. I would say the difference is very substantial and very much worth the money. This is not really a contradiction with what @dwest1023 said. It depends on the associated equipment you own and the value you place on improved sound quality. I am familiar with the different tiers of Aurrender streamers and am also in touch with other audiophiles with excellent high end systems and the consensus is definitely that each step up in tier nets a significant and cost justified improvement in sound quality. So, if this is worth it for you is a question of your system and financial means. I own a $22K Aurrender W20SE streamer and I was simply shocked at how good it was and thought it a great deal at that price because it brought the sound quality of my digital end up to the level of my $45K vinyl end.