Best Tankless Water Heater, Expert recommendations to choose

i’m looking for something different — the best tankless water heater for my home. i’ve been reading reviews from consumer reports, wirecutter, and home depot because i need something efficient, reliable, and not too difficult to maintain. i just want consistent hot water for showers, the kitchen sink, and sometimes running the dishwasher at the same time. many reviews are saying good things about rinnai and ecosmart models. two that caught my eye are:

Rinnai RU199iN Tankless Water Heater, Natural Gas, 11 GPM
https://www.amazon.com/Rinnai-RU199iN-Condensing-Space-Saving-Installation/dp/B07CW426QZ?th=1

EcoSmart ECO 27 Electric Tankless Water Heater, 27 kW
https://www.amazon.com/EcoSmart-ECOS-27-Modulating-Technology/dp/B0BXZ3G5X4?th=1
both of these are compact, energy-efficient, and have good reputations for longevity. the ecosmart looks like a great fit for smaller households with lighter usage, while the rinnai seems much more powerful and designed for larger families or heavier demand. i’m just not sure which one would be better for my situation — or if there’s an even better option worth considering. if anyone has experience with these, or recommendations for a solid tankless water heater setup, i’d really appreciate your help. thanks a lot