In this article the range of visual simulations for the competitive support is discussed and critically analysed by means of numerous definite competitions carried out within the working field of the authors - the range of experience concerning this matter covers a period of fifteen years (easily), all analysed examples were supported with the aid of CAAD/CAP-technologies. Recommendations are formulated and put forward for discussion. Furthermore the aspect of different acceptance of different presentational qualities (Levels of Detail) with the persons involved in the decision-making process are addressed (differences between socalled experts and laymen are particularly scrutinised).