I also use Altiverb since over a year. For me it also is definitely worth the money. I do use it all the time in combination with a Waves Reverb for placement in space. But remember that you need a very powerful Mac if you want to be able to use it in NO LATENCY mode. Altiverb stereo – stereo and the Waves Ren. Reverb, used Simultaneously, takes about 70 % of my G4 1.25 MH / 1 GB RAM resources!
Iwan
Iwan