Reopening this old thread, because I'm facing a related question: What, if any, benefits would a Mac UB user get from purchasing Infinimap Pro versus Infinimap EXR? I do virtually all of my surfacing on Mac, so the option to use the other formats on Windows isn't really useful to me. Also, my need for large texture support is limited, so it's a lot easier for me to justify the Infinimap EXR price (esp. with the Siggraph sale), but I'm trying to understand precisely what I'd be missing out on if I went with Infinimap EXR (UB) instead of Infinimap Pro?
You don't miss out a thing if you're on OSX only. The only difference is the support for ECW/JPEG2000 (because the library for that is broken on OSX and doesn't work properly).
Apparently there's patches/fixes for it and I will re-investigate in the near future. Don't hold your breath for it though.
There's also an upgrade path for the regular price difference if anything changes in the future (i.e. ECW/JPEG2000 support making it on OSX).
Cheers,
Mike