

Hi Michael,
here are two references which may be of interest for you:

	Jan M. L. Martin, Jamal El-Yazal, Jean-Pierre Francois
	Basis set convergence and performance of density functional
	theory including exact exchange contributions for
	geometries and harmonic frequencies
	Mol. Phys. 86(6) (1995) 1437-1450

	Andrew C. Scheiner, Jon Baker, Jan W. Andzelm
	Molecular Energies and Properties from Density
	Functional Theory: Exploring Basis Set Dependence of
	Kohn-Sham Equation Using Several Density Functionals
	J. Comput. Chem. 18(6) (1997) 775-795

Both papers report studies for many molecules with different 
functionals (including B3 etc.) and compare also with traditional
methods like MP2 and CCSD(T).
Ciao,
Heinz
-- 
Dr. Heinz Schiffer                  Phone ++49-69-305-2330                      
Hoechst Research & Technology       Fax   ++49-69-305-81162                     
Scientific Computing, G864          Email [email-masked]         
65926 Frankfurt am Main                   [email-masked]

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