I have just bought a Kia Venga 3 with 1.6 diesel engine. This car has no spare wheel but has an air pump and a bottle of puncture sealant. This is the first car I have owned which does not have a spare although there is provision in the boot to take a wheel.

My options seem to be:-
1. to keep the current equipment,
2. buy an alternative sealant,
3. buy a get me home skinny spare or
4. buy a full size wheel and tyre.

I would appreciate your views on this subject and any advice on the alternatives...