But to be fair, Voltaic's file sizes are much, much smaller than Cineform's. Voltaic recompresses to low-bitrate MPEG-4, Cineform recompresses to high-bitrate wavelet. So they're not doing the exact same job. One inflates the file sizes incredibly, the other recompresses and loses some visual quality.
Thats exactly what I like about VoltaicHD (I am using the PC version) - the quality with regard to the small filesizes is incredible, and I can edit films on my dualcore laptop even in battery mode (slower harddrive, etc...).