Canon 19, 25 and 50 lenses

[sreidvt]

Given that I really like the look of pictures made with the R-D1 and Canon 28/2.8 and 35/2.8 I'm interested in perhaps picking up some other focal lengths. Would love to read feedback or links to reviews, etc. on the following:

Canon 19/3.5

Canon 25/3.5

Canon 50/1.8

Canon Serenar 50/1.8

Thanks,

Sean