I'm considering selling my 20 qt. and replacing it with two 10 qt. mixers. The big bowl full of batter or icing isn't getting any lighter, and I'm not getting any younger. The Aventco has a small "wheel" to lift and lower the bowl. I'm wondering how that is to operate compared to the customary "handle" on most bowl-lift mixers. Also wondering in general how reliable this is. TIA