Joggerman

As the title says I'm wondering if 8x42 (reasonably good lightweight roof prisms) will be ok for light polluted skies in the UK, or whether 10x50 (porros) are better. Also, for the occasional visit to dark skies, whether the choice still stands? And what would I see with each? Thanks

I just noticed that Amazon have the Skymaster 20x80 on offer at £84 delivered. Then I noticed their offer for the 25x100 at £233 (previously £299). I am aware of the collimation issues which may occur in some samples, but the 20x80 seem a good deal. Also, the 25x100 seems a lot of glass for the price. The 20x80 seems low risk, as they are easily collimated by the user, considering the price, but I am tempted by the 25x100. Any opinions regarding these deals, and has anyone tested the "true" aperture of the 25x100 skymasters? Thanks