I own several of those Shimano Sienna 500’s , and a couple 1000’s . Probably 10 total .
I’ve only experienced an issue with one that was hard to wind . Not unusable , but would tighten up a little at the top of the upstroke . Enough to bother me , but at the price of $30 , I stole the spool off it for an extra spool .
These little Siennas , with a few drops of Lucas reel oil in the right places are just as smooth and functioned as reels that cost four times as much .