Vivo: CHF 1824 on Vivo website (but quite a few warranties) OR €1556 on Wonda -4.5% by bank transfer so €1486, i.e. CHF 1370 but 1-year warranty

Oppo: €1550 on Oppo website with free pad (approx. €500), so €1150, i.e. CHF 1050 with 2-year warranty. France delivery early June. Wonda CHF 1170 with 1-year warranty

Slightly better for gaming on Vivo according to first tests

"Neck and Neck" according to Ben, Vivo more detailed according to Geeker

Slightly more detail on Vivo, according to Ben and Geeker

The criterion weight reflects how much importance we give it, how much it matters to us

Then for each criterion we estimate the score each device deserves in our view

Careful here for the weights : I advice to just modify the dark yellow cells because the light yellow one are formulas (that match my tastes). You can of course adjust to your views the formulas for the light yellow cells.

That way I could just modify less cells to adapt the weights, but of course you can modify them all individually, that just takes longer

All the weights used to the AI studies comes from the table here, so their final scores are adjusted conveniently.

GSMArena test: only slightly more detail on Vivo (0.5pt?), very minor. Same for day and night photos

GSMArena test: only slightly more detail on Vivo (0.5pt?), very minor. Same for day and night photos

GSMArena test. Vivo very very close (0.5pt?). Indoors as well as outdoors

GSMArena: Vivo softer (0.5 to 1pt outdoors, up to 1.5pt indoors). Almost identical for indoor macro (depends: 1 photo Oppo better, 1 identical, 1 worse)

GSMArena: Vivo softer (1pt outdoors, up to 1.5pt indoors)

Oppo clearly softer, at least 1pt less. Indoors maybe 0.5pt on one sofa photo but clearly 1pt on one motorbike photo

Maybe 1pt for Oppo outdoors and indoors, but no more than 1pt gap

DO NOT MODIFY ANYTHING BELOW THAT LINE, THOSE ARE JUST RESULTS FROM AI STUDIES. THE COMMENTS ARE INTERESTING TO READ THOUGH

Vivo largely superior. AndroidHeadlines: 'Ultrawide shots during the day are usually always better from Vivo X300 Ultra.' More detail, better balance and dynamic range.

Vivo dominates clearly. AndroidHeadlines: 'Ultrawide shots in low light are kind of one-sided – Vivo X300 Ultra simply wins.' 1/1.28" sensor + OIS vs 1/1.95" without OIS.

Vivo advantage: larger sensor + native OIS. GSMArena notes insufficient video sharpness on OPPO ('falls short in absolute sharpness across the board'). Vivo Log 10-bit on this sensor.

Vivo dominant: native OIS + larger sensor = better stabilization and light capture. OPPO Dolby Vision partially compensates but sensor too small.

OPPO native 23mm f/1.5 vs Vivo crop. Slight preference for OPPO at this specific focal length. Both very good.

OPPO benefits from its f/1.5 (vs f/1.85 Vivo). HomeScreen.pl: 'f/1.5 provides ~40% more light than f/1.85.' Slight OPPO advantage at night at 23mm.

OPPO native, Dolby Vision 4K/120fps. PetaPixel: 'Every camera records in Dolby Vision 4K 60fps without resolution downgrade.' OPPO advantage at this focal length.

f/1.5 OPPO = superior light capture. Vivo in 200MP digital crop, acceptable but not native.

Vivo native at 35mm, ZEISS processing. AndroidHeadlines: 'Vivo does use more sharpening (not overdone, benefits pictures)'. Slight preference for Vivo on its native focal length.

Practical tie. OPPO: f/1.5 cropped + HDR. Vivo: f/1.85 native + Gimbal OIS. AndroidHeadlines confirms very close results.

Vivo native, Gimbal OIS = superior mechanical stabilization. Log 10-bit. Slightly superior ZEISS sharpness.

Tie. Vivo Gimbal OIS vs OPPO f/1.5 from 23mm. GSMArena notes slight OPPO video sharpness weakness overall.

Practical tie. Both use the LYT-901 200MP crop. Very similar results in daylight.

50mm (Standard) - Night - Photo

50mm (Standard) - Night - Photo

OPPO slightly advantaged: f/1.5 raw before crop offers more light. Vivo f/1.85 slightly less bright.

Very close. Both using main sensor crop. OPPO Dolby Vision native at all zoom levels.

50mm (Standard) - Night - Video

50mm (Standard) - Night - Video

Slight OPPO advantage for the same reason as night photo (f/1.5 raw before crop).

OPPO exceptional native 200MP 1/1.28". AndroidCentral: 'The 3x sensor is the largest telephoto sensor ever used.' AndroidAuthority: 'Best 3x camera I've ever used in a phone.' Vivo in crop = clearly inferior.

OPPO dominates significantly. Its native 3x 200MP 1/1.28" is very strong at night. Vivo in crop loses significantly in quality.

OPPO: Native 4K/120fps Dolby Vision. PetaPixel: 'In video, you simply can't fake your way into these optics' (about the 3x). Very strong.