How do you feel about the Meade Elliptical flats ?

I would like to hear good or bad comments about the Elliptical flats used by Meade in their scopes.
Good quality, bad quality?
Thanks,
Floyd

I bought 16"Starfinder Dob, but recently converted it to a truss. In original form, I couldn't get a good focus. I made sure collimation was accurate, and did everything to reduce vibration. When I converted the scope, I went with a 3.1 M.A sec. The primary performs excellent, so the original sec. mirror was bad. IMHO the 4.0 sec is too big for the 16.