Hi and welcome to the forum.
After many debates on the fuel the general consensus is that whilst the car will run on 05 it is designed to use 98 and this will deliver better economy.
The balance of the car is down to even tyre wear so get them to change the worn ones.
The first and third ones are imports not that there is a problem with that. They are harder to work the spec out as there are a lot of optional extras available. The seeking one is a GT spec UK car and brembo brakes are standard on the UK car btw.