a number of years back there was concern around the use of shell v power fuel with people claiming it caused issues with injector orings, carbies, sludge type jelly in tanks/fuel bowls etc

I was very low on fuel and put 1/2 a tank in my bike on the weekend as it was the only premium available where i was.
I havent noticed any negative things in fact the bike seems to like it

does anyone know if this is still an issue or not?

Never had an issues with any of the different brands lately. I always run 98 where possible as it has fuel cleaning additives. I believe that it may not last as long with a 98 octane rating, so if my bike is going to sit for a while I use 95.

Agree the better quality fuels go off much quicker. You can even smell it when off. Like the outcome of a cooked breakfast 

I always use BP 98 if possible. Maybe it's just a habit but when I have used Shell or any of the others I've never had a problem. I do avoid servo's if possible like 7 Eleven and such but that's only because I'm not confident of their quality, although when I have used them, I've had no problems.

I use busy/popular servos because their turnover of fuel is very high which means it’s always pretty fresh. I use Caltex because that’s my local, busy servo and I’ve never had dramas with it. 

I run fuel stabliser over the winter as well in the carby bike.  Seems to work well.

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Haha I’ve been called worse 

Most fuels these days in Australia will come from the same refinery in Singapore. The only difference is the fuel additives that are dosed when a truck is loading at the terminal