If you are going to do any type of breads and want to knead 2 loaves at a time you will need at least a 5 quart mixer. Look very closely at the maximum dry flour the mixer can handle. Then look at your recipes to make sure it will work for you. Also, check the wattage is there enough power to knead the dough. I feel the minimum for me was 500 watts.
My loving husband searched for hours comparing different modals of stand mixers. We decided to get a very basic inexpensive stand mixer that would be a back up mixer incase our expensive dough mixer had issues. So this stand mixer needed to be at least a 5 quart mixer with at least 500 watts of power.
With the current supply issues it took time and my first couple of choices were not available. We ended up buying an Ostba Stand Mixer. I have to say for $99.00 it's a 5.5 quart and 600 Watts. I am very pleased it has worked perfectly. It has plenty of power and is geared slow for kneading dough.