I stated this once in the forum somewhere which is a very important argument against Minolta in my opinion which people easily overlook.hem hem. Minolta glass is cheap specially the 50mm f/1.7 but some of the lenses have a design "flaw" in a sense that you can't fully service a lens or restore them in case of fungus or dust. I can't specifically tell which lenses have this problem, but there is a couple.
Lets say your lens has a little bit of fungus or dust inside depending on which element the problem occurs on in the lens you either be able to clean it or throw the lens away simply because there are 2 elements glued together which you are unable to separate from what I have seen. I still love Minolta, my favourites are the XE 5, felt so good in hand and the Minolta x500. My favourite lens is the Minolta MD 35mm f/2.8, the combo with any MD body is just great.
Here is a video which illustrates the problem with the 2 lens elements glued together. Maybe I'm wrong and you are able to separate them but I haven't found any info on this yet. So my advice look closely at the lens before you buy because in the worst case scenario you will not be able to clean it, which in 90% of the cases you can on a canon FD lens.