Real owners rate these about evenly: 59% of 110 Fenix 8 owners recommend it, vs 55% of 56 for the Vivoactive 5.
Verdicts aggregated from Reddit, enthusiast forums, and YouTube owner comments — affiliate reviews excluded. Sample sizes differ; judge accordingly. How we score
Most Fenix 8 owners are genuinely happy, praising its reliability (many report zero bugs or issues), strong battery life on the Solar/MIP models, a sharp AMOLED or sunlight-readable MIP screen, scratch-resistant build quality, and small surprise wins like the built-in flashlight. A vocal minority pushes back hard, though, centered mainly on price — repeated complaints that the cost, often north of $1,000, isn't justified by what's actually new. That group also cites launch-period software bugs and glitches, the lack of cellular/LTE, accuracy regressions in heart-rate and GPS versus older Fenix and Forerunner models, and a sense that the upgrade over the Fenix 7 is too incremental to bother with. In short: owners who bought in love the day-to-day experience, while skeptics are mostly staying on older watches over price and diminishing-returns concerns rather than any single hardware failure.
Most Vivoactive 5 owners are satisfied, praising the multi-day battery life, comfortable slim fit, and strong value at its roughly $199-$299 price point, especially as an easy-to-use entry point into fitness tracking. Several also note its GPS and heart rate readings held up well against dedicated devices like a Polar H-10 chest strap. A meaningful minority is frustrated that Garmin dropped the altimeter/barometer and stair-tracking feature from the previous Vivoactive 4 and swapped the transflective MIP display for AMOLED, which some feel cheapens the watch and hurts outdoor visibility. There's also a recurring cluster of complaints about inaccurate heart rate and sleep tracking, occasional short battery life, and GPS distance/pace readings drifting during workouts.
“Its amazing especially because it is an extremely dangerous sport when being a type 1 diabetic”— @Tentoumushi69 on YouTube
“I came from Apple Watch to the Fenix 8 about 2 months ago, love it. Zero issues, zero bugs.”— @rb3tactical145 on YouTube
“Price is ridiculous and the features do not justify it.”— @bellosthomas on YouTube
“I'm very happy with my vivoactive 4 and will likely ask for the vivoactive 5 for Christmas.”— @tinwhiskerSC on YouTube
“This watch seems like amazing value and a great choice for the more casually gym-go'er/runner/moderately active person”— @martinjrgensen8377 on YouTube
“So disappointed they removed Stairs. I feel like I need to stick with the Vivoactive 4 for this reason.”— @dianacrabtree6546 on YouTube
Real owners rate these about evenly: 59% of 110 Fenix 8 owners recommend it, vs 55% of 56 for the Vivoactive 5.
Owners point the Fenix 8 at hikers, divers, and outdoor athletes who want rugged multisport tracking with solar/long battery options, and upgraders from older Fenix/Forerunner models wanting AMOLED or MIP display choice, buttons, and a bigger sunlight-readable screen.
Owners point the Vivoactive 5 at casual gym-goers and moderately active people wanting a budget-friendly Garmin, and non-tech-savvy buyers who want an easy, simple smartwatch experience.
The most-cited downside of the Fenix 8 is price is the single biggest complaint — many call the cost (often $1,000+) unjustified given how minor the upgrade feels. For the Vivoactive 5, it's removed altimeter/barometer and stair-climb tracking that were present on the Vivoactive 4, disappointing upgraders.