Nyaudio98 - please describe the rest of your system. It's tough to make a recommendation without knowing the equipment you're using.
I listen to MOG a lot and it definitely sounds the best of all the streaming sources because of its higher bit rate. Still, at 320 kbps there's only so much you can do to improve things. A decent DAC definitely helps, but then so do decent amplification and speakers.
MOG will disappear in about a month, to be replaced by beatsmusic.com. I was happy to see they'll still be streaming at 320 kbps. MOG has been an incredible bargain at $5 a month and beatsmusic won't be quite as good a deal but there seems to be a lot of muscle behind the startup so I'm hoping the music selection will be even broader.