I used a friend's Bernina 150 to do stippling over the weekend. One thing it doesn't have that I really missed is a needle threader. Her machine did have the knee lift lever - something that sold me when I bought a new machine 12 years ago. My friend's Bernina did not have an indicator for when the bobbin was going to run out either (I ran out twice). So those 3 features are very important to me: needle threader, knee lift bar, bobbin indicator.
Good luck with your search. I wish I lived near FL, I would go check out that store!