Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Worst Fountain Pen I've Ever Owned

My wife bought me this pen and its roller-ball mate. It hasn't worked well since I received it. At its best, the ink would stop flowing if I stopped writing for more than a few seconds.and now it refuses to accept the ink cartridge, no matter how hard I push on it. It has become an attractive but completely useless item. I have a collection of pens from the very expensive to the very inexpensive, and I've never had so much trouble with any of them as I've had with this one. Other reviewers seem to like it, so perhaps mine is a unique lemon, but I will never buy a Waterford pen.