Ireland vs Spain

Spain is cheaper: $1,884/mo against Ireland's $2,616/mo.

Ireland is pricier than 35 of 41 European countries; Spain is pricier than 23 of 41 European countries.

Spain is safer: 2.8/5 against Ireland's 2.7/5.

Ireland is less safe than 25 of 41 European countries; Spain is less safe than 24 of 41 European countries.

Spain scores higher on mobility: 3.1/5 against Ireland's 2.7/5.

Ireland is harder to get around than 29 of 41 European countries; Spain is easier to get around than 25 of 41 European countries.

Spain scores higher on culture: 4.0/5 against Ireland's 3.9/5.

Ireland is richer in culture than 29 of 41 European countries; Spain is richer in culture than 32 of 41 European countries.

Ireland's passport reaches 104 destinations visa-free to Spain's 105 — Spain 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.

Spain is better connected: 315M passengers/yr against Ireland's 42M passengers/yr.

Ireland is busier than 53 of 87 countries worldwide; Spain is busier than 83 of 87 countries worldwide. Ireland sees ~9 air passengers per resident a year; Spain sees ~7 air passengers per resident a year — a derived figure, not itself ranked.

Ireland runs -13°C to 23°C for most people; Spain runs -5°C to 35°C for most people.

Depends on you — which range fits your tolerance is the real question here, not a score.