Coax or Toslink, Which is better?

I'm thinking of purchasing a cd player but it only has a Toslink digital out. I'd prefer a coax since I have a Stealth digital coax I just purchased. Is there a big difference in audio quality and signal stability between the two? I have a Marantz cd recorder with Optical and coax digital ins. Sorry if this has been asked before?? Thanks Joe Lienhard joelien@wa.freei.net