The Stand Mixer
You need (or you must) invest in a good-quality stand mixer such as a KitchenAid.
KitchenAid mixers, which set the standard for all other stand mixers, come in several sizes from 5-quart bowl and a power output of 325 watts to commercial one 8-quart and 500 watts
Which one should you buy? Buy the best one you can afford.
Also, whichever model you choose, make sure you like the color, because you will be living with it for a long time.
I listed some of the options below:
KitchenAid 5-Quart
This is an entry level. Baking is just the beginning, with 10 speeds and more than 12 available attachments to help you whip up everything from pasta to ice cream. And, the special tilt-head design allows for easy access to the beater and bowl.
KitchenAid Professional 600
The Professional 600 comes with 6-Quart Bowl-Lift Stand Mixer is perfect for heavy, dense mixtures.
KitchenAid Pro Line Series Stand Mixer
It is the most powerful, largest capacity, best performing Stand Mixer ever. It is 7-Quart Bowl-Lift Stand Mixer. You can mix up to 14 dozen cookies or 8.5 pounds of dough at once.