I think it really depends on the kind of work you are doing as each system has advanatages and disadvantages for different types of work.
I work in film and 24p – nothing touches the Arenaline (or Film Composer) for metadata managent, control over all pulldown cadences, frame based work, in conext tracking of keykode (allgauiges) and all timecodes on a per frame basis, integration into a downsteam workflow for managing changes, audio, EDL with pulldown cadence for tape to tape color correction, autosync, autosequence, 1/4 frame audio resync, read audio timecode, are all features that I depend on for every project I do. Things atart evening out if these type of features are not of a concern or a priority.
Michael