Cat collars?

I was wondering if anyone can reccomend any brands of collars that are better than others. Or training techniques to make the cat keep them on?

My cats are chipped but we all know that if they are lost & found not everyone thinks to take them to the vet or shelter to have them checked.

I have tried a few different collars on my 2 and they keep getting them off. They do go outside so I do need one with an emergance release just in case. I'd love for them to wear a collar with a tag just in case. Any pointers anyone?

Off the Top of My head I would say the Ova Collars,which keep Fleas off too,for 6 Months!

My kitties wear break-away collars from http://www.k9collars.com/products.php?type=Cat
They have great colors and they will embroider on them. We have our home phone number embroidered on ours.