Stay away from GB sights, the guy who was the distributor went down the pan, you will only pick up one secondhand, thus you take the chance it may be a repair job already! As Clint said spend the most you can afford, then is some new digital dedicated sights on the market now the Pulsar DigiSight I beleive you can get for under £1k and I Imagine it will do the job nicely (Scott Country sell them in Castle Douglas, still a trek for it but you could ask to see it working). If you want a trip over to Edinburgh to see through my ATN Trident Pro you are more than welcome, but they are a Gen 2+ Â