Where do you go after a BlueSound Node 2i?

Whats the next step after the Bluesound Node 2i?  I love the interface with the Bluesound so I don’t want to go backwards on that and I do use the bluetooth option sometimes to stream soundcloud, which sounds really quite good.  My main service is Amazon HD music.

So, what next?  Schiit Gungir Multibit or Cambridge Audio Azur 851N or ...?

Thanks for your help! I know this has probably been discussed before but I couldn’t find the threads!

Thanks!

Best Regards,
Bruce