I made a couple of posts in the thread referenced by @Exapno_Mapcase, most notably this one:
My situation was exactly the marginal case where either stenting or bypass might be feasible, but because the initial angiogram revealed more blockages (stenosis) than expected, I was sent back to my hospital room with a recommendation for bypass surgery. My rather strenuous objections led to a re-assessment and an agreement that stenting followed by a regimen of medication would be sufficient (though if I had been willing, bypass would probably have been marginally better).
I got the stenting as an in-patient only because I was already there following a mild heart attack. It’s sufficiently non-invasive that it can be done as an out-patient procedure. As with everything else, there are pluses and minuses and there are risks. I was informed that, as non-invasive as it is, the stent placement procedure can potentially trigger a heart attack (very unlikely, but it’s possible). It’s also possible to accidentally puncture an artery (also very unlikely, but possible). But overall I think there are more risks in full open-heart surgery, and certainly a more difficult recovery.