I've now had my Lyra and M603 scopes for around 6 months and feel I have used them in direct comparison often enough now to summarise and compare some of their key strengths (and weaknesses) For anyone that's not familiar with either scope, here are some basic specs: Lyra F11 Achromat Aperture - 102mm, Focal length 1100mm (F11) Crayford dual speed rotatable 2" focuser with 1.25" reducer Sliding dewshield c10" long Baffled (x3) main tube Maker: Kunming Optics, China. Supplier: Lyra Optic, Rochda