I owned the Midi Mobilizer for a week. The reason I sold it was simple: every MIDI app is going to support CoreMIDI, bar none. Not all apps will support the Midi Mobilizer.
The choice to dump it was a no brainer.
Oh, and speed wise? Nothing is going to touch iConnectMidi.
How much faster is iConnectMIDI than the MIDI Mobilizer?
Over one-hundred times faster.
Comparing apples to apples, iConnectMIDI uses full speed USB at twelve megabits per second. The MIDI Mobilizer uses serial communications at only 57,600 bits per second. Even accounting USB overhead, iConnectMIDI is a professional standard.
More importanly, iConnectMIDI is taking advantage of the new CoreMIDI framework introduced in iOS 4.2 - which removes all of the normal communication overhead as well as optimizes the iOS device communications with hardware MIDI connectivity. iOS with CoreMIDI is extremely fast with no perceivable latency.
It remains to be seen how fast the iODock will be, but I suspect it's going to rival iConnectMIDI. The iODock is also CoreMIDI based.
The best thing about the iConnectMidi? Besides speed? It's all CoreMIDI. No fucking proprietary API to deal with...
