MI Trimmer Vs Philips Trimmer Bt3221: Mi Trimmer Vs Philips BT3221: Hi, want to buy a trimmer but confused between Mi Trimmer and Philips BT3221 Trimmer, then follow this article to know which trimmer is best to consider. Both trimmers come from the best companies and both are very popular trimmers. Therefore, it would be interesting to compare both the trimmers.