nitrox analyzer

I searched the site and could not find what I was looking for. I am wondering what brand do most of you use for your Nitrox Analyzers. I also would appreciate any advice on what brands to avoid, and real world use with them, i.e. how often does it need to have the sensor replaced and the...

I recently did the course work and became Nitrox "Certified", but haven't yet used a tank. Now I'm in Cozumel, doing a week's worth of diving and the outfit I'm with said they have nitrox available, if I want it for $10 more. I'm interested in trying it, but I don't think that I will be able to...