I have the Pro 600 with a 6 qt stainless steel bowl....love it. I do make large batches of cookies and it makes it so much easier to make tons of cookies at Christmas time. I even purchased an extra 6 qt. bowl with a lid so that I wouldn't have to keep washing the one bowl when making several kinds of cookies. I also have quite a few attachments, the pasta maker is a lot of fun and makes great ravioli.
The machine is also great for making the best whipped cream. For recipes like sponge cake, that you have to beat the eggs for like 5 minutes, it's sure nice to not have to use a hand mixer.
I keep mine on the counter and I purchased a hand made cover that I bought on Etsy with my name on it
My confession, I'm getting a second one with another Etsy embroidered cover for Christmas this year...that's how much I use them.
P.S. They sell blades now that have an enamel coating with a rubber scraper on them...worth the purchase!
Debbie