DFT in Gaussian & Biosym

 Thank you for CCLer's kindness.
 I would like to get any information of DFT.
 I know that two software (Biosym & Gaussain94) can
 do DFT calculation. Which software is more effective
 and economical in solvent effect calc.?
 What is characteristic of each software? etc...
 In expectation of your answer...
                     Truly yours,