I have some old Mac 500's that currently have the Philips 575/2 bulbs and are in need of replacement. Since this is my first rodeo replacing these I was hoping some of you might have suggestions on what to replace them with. I currently see the Philips lamp going for 125$ or so and I see the GE equivalent going for about 75-80$ Is there a real differerence in bulbs here that I should be concerned with? I don't want to spend the extra money if I don't have to 
~:-D~:grin:! Is there another source for these other than the usual bulbamerica etc?
~:-D~:grin:! Is there another source for these other than the usual bulbamerica etc?