Kay was nice and always responded very quick.
The product came I think around 15 days late which was ok with me.
LM 60 - the quality was as tested before buying.
LM 90 - the quality was not that good although the one I tested before purchase, was really good.
To me, LM60 and LM90 pretty much same quality. I was not able to see any difference.
Also not every shuttles were same. Some of them were very good flight but some of them were not that good.