I really love these clippers. I did a lot of research before hand and all signs pointed to these clippers. I am a professional licensed barber. I do lots of cuts all day and these clippers keep up and deliver with haircuts. They do get a little warm. But it's to be expected with as much cutting I do, but if you are purchasing for at home use you will probably not run into that problem unless you have a faulty clipper. Cutting wise you cant beat the zero gapped blade. It makes cutting so much more efficient time wise. So if you questioning between the regular senior or the 5 star seniors GET THESE. You wont regret it. I have had problems in the past purchasing professional clippers online as they were "used" or missing items in the box but these were 100% authentic and everything was new & in the box. Great buy & great price. I highly recommend