I have a maxxum 50mm 1.7, it's probably the best 35mm normal lens i've ever used.
I kid you not, it's sharp. It's contrasty. It has amazing bokeh. I never had any complaints with it except that yes, the manual focus ring is a bit thin. It feels nothing like a Asahi Pentax screwmount lens (obviously) when you focus..

I'd go for the 1.7, it's a bit less expensive. You aren't missing much at all.