Renderer of Choice?

[aspaceintime]

I finally finished ripping all my cd's to my Synology DS212j. Here's the make up of my collection; (90% FLAC, 10% Hi-Res downloads) It's located in my basement HT along with my Marantz SR 6010 and Oppo 203. I can play just about anything via the Oppo. I use 2 instances of Minim Server, one on the NAS and one on my iMac located in my upstairs office which is connected to the same network as the NAS.

When I use the server in the Marantz, it works ok but it has quirks at times like not showing the proper album art and it only has a set list of metadata to view. Enough background details...I'm looking to improve the playback functionality with my setup and I have a spare iPad I keep in basement. What suggestions would you have to enhance my setup? I have thought about buying a streamer from Cambridge, but I thought I'd ask those with similar setup what has worked well?