Instruct: Classify the given review into positive or negative sentiment.
Query: Philips ruined a great product

Ever since philips bought out sonicare it's obvious that their manufacturing has gone to the lowest bidder (in china). They are nothing but high priced disposable junk now - (189.00 flexcare+ on my third replacement in less than 8 months). My last sonicare, prior to the flexcare+ died right after the warranty expired. I have to say, I'm finally done with them.... I'm going back to oralB. What a shame, use to be a great product till philips got involved.