What is the most reliable brand of Fertility Monitor?

[Aquamarine]

What brand of Fertility Monitor do you recommend?

I want to start tracking my cycle.

Thanks

[Duchessa]

A thermometer is the most reliable for me - I just bought a proper BBT one so it has two decimal places and it is really good - I was just using a regular one before and it was still accurate. I use a Maybe Baby too and I'm sure it works, but haven't really had a chance to test it properly yet cos my cycles are so darn long. There's always the good old OPKs though they cost more.