This paper discusses revenue inequalities, utility equivalence, and a model of competition in auction design in symmetric equilibrium of k-price auctions, $k\ge 1$ , all in the setup of symmetric independent-private-value auctions. Our recommendation to organizers of auctions is to conduct k-price auctions, $k\ge 3$ in environments in which buyers are risk-seeking. The recommendation is given both for, a setup in which each organizer is a monopolist, and for one of oligopolistic competition. Copyright Springer-Verlag Berlin/Heidelberg 2004Competition in auction design, Fun seeking, Internet auctions, Risk averse agents, Risk seeking,