Hilmar Raeschke-Kessler has over the years been acknowledged as outstanding in his internatioanl and domestic arbitration practice. Feel free to read their comments or see lists of most in demand arbitrators:

Chambers Global 2012, p. 1020 [612 KB] ;
Euromoney, The Best of the Best 2011, p. 27, 37-39 [2.032 KB] ;
Juve Handbuch 2011/2012, p. 380. [1.207 KB]