Cari mentioned Brother. I have a Brother Prestige with no cams. It has straight stitch, zigzag and blind hem stitch built in. It's a very smooth running machine, comparable to my daughter's 401A. I'm sure it would be even better if I replaced the belt on it. I just bought an older MW machine made by Happy(straight stitch and zigzag only) and it's comparable to the other two. I would recommend any of the three but the Brother and MW machine don't have a blanket stitch. My other Japanese machines aren't as well built, they have more vibration.
The 400 and 500 series slant needle machines from Singer are popular for good reasons. They also have the advantages of being relatively common and having easy to find accessories. The greatest machine in the world does you no good if you can't find one or parts to fit it. Ebay is full of cams and feet for the slant needle series of machines. Searching for cams for many zigzag machines is like finding a needle in a haystack. I'm a fan of Touch & Sews too-even with the plastic gears. Plastic gears are a problem for any machine of that age. The plastic is at the end of it's usable life span. At least you can buy replacement gears for the Touch & Sews, that's not always true for other machines.
Rodney