Yes, yes.. i like them also, namely CE-4 and CM-4s .. simple, cheap and reliable, but I admit, they don;t give me the same feeling like an M class pentax (MX or ME Super) while shooting :-)
I can also recommend, as cheaper alternative to Pentax bodies, the Ricoh series, especially the older ones (with Copal square shutter - also found in Nikon FE and FM and Konica T4, TC, not Seiko ones). The XR-1 and XR-2. These I like better than Chinon and way better than the chepest k mount camera alternative offered by Cosina (found also under many names like Vivitar, Ricoh KR5II, Petri GX, Porst etc.).