I'm buying a stainless steel French press for my mom for her birthday, and I am a bit overwhelmed with the choices. They all seem to get decent reviews on Amazon, but the prices vary wildly, and they all seem to have a few dud reviews (I know those might just be grumpy people, but I'm a bit clueless here). I want to get the best one I can get for around $50 or less. I could go a little higher if warranted. Any suggestions? Any that I should definitely stay away from? Thanks!