Anyone out there use Mirror Lenses w/ D90

[PVL2]

I have a question for you D90 lovers, has anyone any information on the mirror lenses from Bower 500mm or 800mm I have Nikon D90 and want to try other less expensive lens before I spend $$$$

I am also a D90 owner/lover I am having a ball with my camera shooting stills.

Thanks

 

[beckspace]

if you dont mind the donuts bukeh and the fixed slow aperture, mirror lens can give pretty good resolution. but I dont know about the Bower ones

 

[PVL2]

Thanks for the response, I will most likely buy the 150 - 500mm Lens I been researching.