I strongly recommend the Pfaff machines. I have one, Creative 1471, I bought new in 1986 and still use it everyday I sew. I like it so much better than adding the attachment like I have to do on my Brother 1500D. Maybe look for a used one.
Yes, my Bernina 830 has it built in, too. I just pull it down from behind my needle. It locks in place. I pull on it and it goes back up if I don't want to use it, but I always use it, always for everything. I buy all my feet so they can go with it. It makes all the difference in the world.
I have the Elna Excellence 740 and it has it. Love this machine. The Janome 7700 also has it
The new Janome 12000 has one built in. Would love to have it but I just bought a 11000. Maybe in 5 years they will have one that has lots more programs built in and I will think about it. Good luck.
My Viking Diamond has a built in feature that allows quilting without the walking foot. It works really well. I have only done stitch in the ditch and a couple of the built in quilt stitches. My goal for the next few weeks is to try FMQ. I love this machine, wish I had more time to use it!
I wish the companies called them all the same names. All the different names are so confusing.
It is what keeps me coming back to Pfaff, the ease of use of their walking foot. I had several Janomes with the Accufeed foot, but putting their foot on the machine is like changing the oil in your car...very time consuming and pain in the ankle. Just my opinion.