Well mate,visually they peform really well! pinpoint stars and on the moon I detected no colour at all . The focal length on these is only 600mm,so a good barlow is a must have for image scale on planets . I've pushed mine to 200x with no problem at all, so I can't see how you can go wrong with one of these scopes for the money you pay .
Is It as good as a Tak ? no but It still is a good apo for a very good price !
Louie