I tried all three. It leaves a good cut and it's easy to maneuver but maybe needs a bit more power or something IMO. Bagging is what it does best. Under good to ideal conditions eg dry grass cut at least every week, mulching and discharge worked pretty good.
I have to make it clear that I just cut a few yards as part of a handyman type operation... I'm not an expert on mowers or lawn care by any means.
Good luck with it. It's good for what it is but I'm not sure it's worth the price you pay for a new one. I sold mine for $600 and it was in great shape and the new owner loves it.
Were you mulching bagging or discharging? I am going to get one in the spring I would like to minimize the amount I bag my customers lawns. I have never side discharged so I will have to learn. I will not stand to see any clipping left on lawns looks terrible and unprofessional. So I know there is an art to discharging but hopefully I can just mulch