The recordings sound better than anything I've heard (even Holosync) - and each stage has over 100 hi-def, natural, emotive recordings - thus answering one of the greatest criticisms directed at binaural beats in general (i. E. they tend to sound a bit crap and boring).
Spiritualbeats recordings sound awesome, creates breathtakingly relaxing states, quite clearly effects you in a positive way - and is a bit of a pleasure to use.