Papua New Guinea vs Solomon Islands

Papua New Guinea has no monthly cost data yet; Solomon Islands has no monthly cost data yet — not enough data to call a winner.

Papua New Guinea has no safety score data yet; Solomon Islands has no safety score data yet — not enough data to call a winner.

Papua New Guinea has no mobility score data yet; Solomon Islands has no mobility score data yet — not enough data to call a winner.

Papua New Guinea has no culture score data yet; Solomon Islands has no culture score data yet — not enough data to call a winner.

Papua New Guinea's passport reaches 45 destinations visa-free to Solomon Islands's 91 — Solomon Islands opens more doors without a visa. Passport strength shifts over years of naturalisation, not months of planning, so it's a long-horizon footnote — not scored in the tally.

Papua New Guinea's 1.4M passengers/yr annual passenger volume (across 1 scored city); Solomon Islands has no annual passenger volume data yet — not enough data to call a winner.

Papua New Guinea runs 20°C to 33°C for most people; Solomon Islands runs 24°C to 35°C for most people. Depends on you — which range fits your tolerance is the real question here, not a score.