It's nice and smooth, until you wind it with that loud "clunk"! I don't think it seems cheap at all. It seems pretty robust. But, yeah, it seems to have a sharp fast lens and the bokeh looks pretty good too; I need to use it some more before drawing too many conclusions, but my biggest beef with it is its size -- quality-wise, I think it's great. And I don't have to worry about batteries.
I agree - winding department on Petri 7s is somehow distracting, and that "clunk" makes whole business looking like it has internal error, though it's by design. I had wrote how to silence it a bit.
Also agree on lens, it compensates what I called cheap feeling. Turn aperture and speed rings, material for me doesn't look too solid, and feeling when speed ring is turned, also lacks smoothness. Everything works, just like cheaper built car moves you from place A to place B.
Viewfinder has nice contrast, guess because of green sheet over RF window, that's called Green-O-Matic; I like VF a lot, just RF patch isn't large enough, though still usable.
I don't have Petri Color to compare build quality, though owners report it's more solid built than 7s model. For me it's like Yashica Lynx models feel more substantial than full-sized Electros, later GSN especially. World changed, companies had to make cameras cheaper, nothing extraordinary here.
To add on Oly, beater 35RC is my only Olympus RF camera. I like it's size, off-the-top multi-pass advance lever, and how pictures come out.
Shutter release gets improved a lot by release attachment.
Aperture ring is too narrow and too close to body, because Auto mode were designated as general way to use camera. Thus shutter speed knob was designed to be accessed easy and fast as main exposure control.
Don't know if it's only my camera, though focus ring on front on lens can easily turned off position. I'd like focus ring to be more dampened.
It's nice carry around camera, if I don't need large apertures or slow speeds.