I have been a long-time Mog user, but I thought I'd give Spotify a try. Currently, I have a subscription to both and will end up canceling one of them at the end of the month. My thoughts are as follows:
- Music Library. Both services has a very good selection of music, though Spotify claims to have more. In the limited amount of searching I've done, they seem pretty comparable to me, and I never thought Mog was lacking in this area at all. WINNER: TIE
- Desktop Apps. The Spotify Mac app is terrific! It automatically imported all of my music from iTunes, though some of them were not recognized. It's also lightweight and works very well on the desktop. Mog's desktop interface has improved, but does not offer the same features as Spotify. WINNER: SPOTIFY
- Mobile Interface. The Mog iPhone app has really improved and has a very nice interface. It has a lot more features than the Spotify iPhone app, and the organization is much more intuitive. Spotify, on the other hand, just released their app and have a lot of work to do... though don't they already have an app in Europe that's been out a long time? WINNER: MOG
- Sound quality. Mog has 320 kbps MP3's when connected via WIFI or when downloading to the app for offline playback. Over 3G, it is apparently only 64 kbps streaming on the iPhone. Spotify's OGG streaming has a low bandwidth option of 96 kbps or a high bandwidth option of 160 kbps.
Sources:
http://www.spotify.com/us/help/faq/tech/
http://support.mog.com/kb/general-information/what-audio-quality-bitrate-does-mog-support
Since I do most of my mobile streaming via Bluetooth, I don't really notice a difference in audio quality, but it appears Spotify would have the advantage here if you have a good connection. WINNER: SPOTIFY
- Performance. In realtime usage, I have found that Spotify starts streaming more quickly than Mog. Sometimes it'll take Mog a few seconds to start playing, while Spotify seems to start in just a second or so. When switching to high bandwidth mode in Spotify, I have discovered that the audio will occasionally drop out, so I think it's more difficult to keep a steady connection at this rate. At the low bandwidth option, both Mog and Spotify seem to keep a steady connection and play back smoothly. I haven't had any downtime with Spotify yet, but Mog has had a good number of outages and general server issues since I subscribed last year. On the other hand, the Mog app is overall quicker to start up and easier to use, which leads to an overall increase in satisfaction. WINNER: TIE
SUMMARY:
I'm still undecided at this point. As they are right now, I think I'd still take Mog over Spotify simply because I use the services almost exclusively on my iPhone and Mog's app is MUCH better right now. However, Spotify's actual service is probably better and perhaps its outlook is better (bigger brand recognition and more subscribers, I would imagine). If they can greatly improve their mobile app, then I would probably switch to Spotify.
What do you guys think?