Aspherical Quality lenses from OPTOLIFE?

Lot to be said for quality lenses. I have bought a couple aspheric lenses a 50mm and a 52mm boro from Optolife. For my application the 50mm seems to be the best. The 52mm might have use with the R2. Have 4 more 50mm on order and the cost is about $15.50 a piece with shipping. Down side is there is no lip like the DX, KD, wellparts etc.....Plus side is these are pretty optical lenses.

Has anyone else tried Optolife?