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Seems the common demoninator here is that most of us prefer BP , one I avoid is Caltex .
When you say 'here' you mean New Zealand?
New Zealand doesn't have even half of those petrol brands, different petrol standards, different commercial environment and the BP NZ 98 product is an entirely different fuel to what we get in Australia.
New Zealand is somewhat unusual as typically (as in Australia) the major oil companies control their own refineries as part of their supply chain. The one NZ refinery belongs to all four refiner marketing companies.
Also Caltex NZ is 100% Chrevron Corporation (US), here it is a 50/50 joint venture and operates very differently in a more competitive retail market (price, competition, distribution).
My preference goes:
1. E-Flex
2. E-85
3. Toxic, imported, overrated old school carginogenous 98... from Caltex.