Sir Thomas Beecham and Jean Martinon performance versions are my recommendations.
Sir Thomas Beecham and the ORTF performed the Sym. Fantastique with a melancholy and relayed the dream like state of this work very well. The sound is more than acceptable, but do not expect audio demonstration quality.
http://www.towerrecords.com/product.aspx?pfid=2787828
Jean Martinon also performed the same piece with the ORTF and delivered an equally stunning performance.
http://www.towerrecords.com/product.aspx?pfid=1767831
The links are included for your reference, but I do NOT endorse Tower Records.
Aaron