I selected this model because it uses the same shaver head as my all-time favorite - the Spectra 8894XL, which after many years of superior service has a broken blade holder. The AT814/41 model just does not perform the same, even the feel against the face seems different - but it uses the same HQ8 blades. I am thinking that the blade RPMs are slower with this model. It may be the difference between Li (AT814) versus NiMH (8894XL) batteries used in these two shavers - or motor drive specs. Yes, the new shaver with Li batteries is lighter, but has less shave time compared to the NiMH. My next step is to get a replacement part for the Spectra and be happy again.