The Tiara is the same inside as the Handiquilter Sweet 16. There are a few differences between the menus on the screen, but they are functionally the same and are built in the Handiquilter factory. You can find lots of reviews on the Sweet 16.
I love my S16, and I have had it for coming on 4+ years. Take a look at the Yahoo group for Sweet 16; lots of good information there. If you are trying to decide between the HQ and the Babylock, just compare prices and dealers. I do t think you would be disappointed with either one.
Pam