When I was researching lift tables, Handy seemed to be the default lift at Harley shops, but it is also the most expensive. You'll find Handy is the only lift manufactured in the US. The others are made in China. However, there are good Chinese lifts out there.
I chose a Quality Lift (which seems to be made by the same company that produces the K &L Lifts) because I liked the way the wheels rode in a track rather than on the floor (I have RaceDeck tiles on my floor and didn't want to scar them up). Also the side extensions remove easier.
I researched lifts a long time and looked at quite a few. Just remember, you get what you pay for. I found some complaints on-line about some cheaper lifts in which they wouldn't fully extend or they malfunctioned shorty after purchase. If you find a lift you're interested in, Google search for complaints from customers.