I always used Google wallet (which still didn't support all my cards in the uk) but have been converted recently to Samsung wallet due to Samsung Pass being integrated into the app and the Samsung Pay+ Card by Curve.
What sold it to me was being able to register all my physical cards with Curve and only needing a single digital card to pay with via Samsung wallet, makes paying simple with no selecting the right card when at the till.
There's also the bonus of getting a physical Samsung Pay card to use as a backup. Again its the only card I now carry around with me.
What I also like is within the Curve app you can setup rules, for example if you pay for your food shop on a separate card to earn reward points etc it will automatically select that card to pay with or even over a certain value. You can also move purchases between cards up to 30 days after the fact.