I have 3 lenses for my 2 Bessa R3A cams

I decided I didn't want to spend the increased amount for the Zeiss M 50. So The latest one had to be the Nokton 50/1.5 Aspherical; and it makes the R3A hang right, like with the 90mm R. There are pics here of this beatiful lens:

http://cameraquest.com/nrfVClens.htm

Now I shall sell my 2 Leica made lenses. Sorry, I already have a buyer.

I am going to buy another lens but I'm not sure which one. It may be another Nokton 50/1.5, though, because it's a pretty good lens for the money. Any suggestions for other 50mm's? I prefer only sharp lenses for my R3A's with HP5+ stuffing. Thanks.