I moved from rapid evolution to mixed in key and i don't recommend it.
Although mixed in key is completely easy to use (drag 'n drop and it analyses and renames the files automatically) it is extremely inaccurate. It has trouble with straight 4/4 BPM's (such as reporting minimal techno tracks @ 120-125bpm as 80bpm etc) and it also seems to love reporting a majority of tracks in major keys.

Rapid evolution is a fucking pain in the arse to use, it's a bit more accurate with the key detection (only just) but its downfall is its GUI.

I'm personally just going to key my tracks manually.

I have to say that Mixmeister Pro is pretty spot on with most tracks. I have yet to have a problem with keys. Although it will half or double time some BPMs. That is easily fixed with a few keystokes though.

The main thing about "mixed in key" that offends me is how they dumb the whole thing down into "key codes".

Seems much faster to do it manually, either using an external instrument or the keyboard built into Rapid Evolution to check the pitch with.

Another advantage to doing this manually is with songs that change key. What's really needed is two "key" fields, for "start key" and "end key", but this is easy enough to note in the comments. I don't think any "key detect" software deals with that scenario properly though.

Key codes are just easier in practice. A lot of people don't have a deep knowledge of harmonic theory, so the key code thing shortens the learning curve (and it's easier to stay on target when you're rinsed and trying to mix).

I personally like storing the key code with the actual key... helps me learn the relative keys.

:: continues to wait very very patiently for Pitch n' Time pay-plug-in ::

:: sigh ::