Just bought a Givi X08 which after coming from years of Arai RX7 use does feel heavy and cumbersome. However did 600 miles in 2 days wearing it and it wasn't too bad, yes wind noise was louder, comfort wasn't up to Arai spec, (but I am comparing a £650 lid against a £150 lid so that is to be expected), but it was wearable and didn't give me a headache
Vision - actually very good
Visor - did steam a little, but haven't fitted pin lock insert as yet.
In built Sunglasses / shades - mechanism a bit fiddly with gloves on, but still OK and useable.
Flip up operation - good and solid, but I did keep knocking the chin guard loose, so took the chin guard off completely.
Conclusion - its OK, but don't expect Arai RX7 quality out of a £150 lid