I just purchased an older Pentax LightSeeker AO in 30 8-32X 50 for $375. It is clear very clear to above 24X about half the way to the 32x. Little to no eyestrain. Picked it up for my wife's rig. It is a lot of scope for the money. If you have 450 look for one of those. I have seen several nice NF rigs for 900 on one of the forums recently.