What 50mm lens should i buy for my HV30? I'll want to use it with a DIY 35mm adapter.

I want to buy the sharpest, best quality Manual Focus lens,

Some competitors:

- NIKON NIKKOR 50mm F1.8
- CANON FD 50mm f/1.8
- ASAHI PENTAX SUPER TAKUMAR 50mm F1.4 (some people told me, maybe it's one of the sharpest 50mm lens ever made - Is it true?)


I heard that the Nikons' have a bit better, sharper image quality than Canons, and that the Nikon f1.8 is sharper than the f1.4 which cost much more.

Which one is the best? What about the Pentax Takumar?
Other recommendations?