The Babylock Tiara is the same machine as the HQ SweetSixteen.
I've driven the SweetSixteen a couple of times and I drool over it but can't afford it. The SS gets great reviews just about anywhere you look.
APQS also makes the George sitdown machine. Then there is the Homesteader, the Sunshine, the WOW machines..... there are quite a few sitdown models by different companies.