I've now switched to a full streaming setup too. Currently running a Naim Supernait into Kef LS50s which are being fed via the digital out of a MacMini. It has been optimised for use as a transport only. No monitor or keyboard etc. I run Audivarna + as the music player, which has settings that switch off all extraneous features when you hit play. You can control it via an app on your iPhone or iPad. I can also use my MacBook Pro to connect directly to the Mini should I need to adjust anything in the OS. Sound quality wise, it's very impressive. I tested it against a Naim ND5 XS2 dedicated streamer and to be frank, the MacMini was just as good, maybe even slightly better? (that test saved me a good chunk of cash!). I also signed up to a 3 month free trial of Tidal and I must say I'm mighty impressed with not only the quality, but also the selection available.
I first dipped my toe into the streaming life with a pair of AVi ADM9.1 Rss and an AEX, which I enjoyed a lot, but got ultimately frustrated with issues of drop out from the AEX and audible "clicks" every now and then. The current setup is faultless in this respect. The sound quality is also far superior when compared to the AEX (which can only do 16bit-48khz).
All in all, I'm very pleased with the setup I now have and I have no urge to go back to a full rack of boxes and shelling out hundreds of pounds a year on vinyl and CDs!