I don't like them. I find them uncomfortable and unsteady....but then I am an older person and think those ultra lites are built for the young active person.
I had an Invacare ultra lite and had to send it back....I couldn't get in or out of it without help. You need great upper body strength or strong legs that still hold you to transfer.
JMO. Other's stories will be different.
The best of luck of you in your choice..