I’d look at features they offer and the communities and avoid buying into the marketing bullshit & shilling going on.

It is really a matter of preference, most pools seem fair for payout. Thw larger the pool is the more average the daily income will be if that matters to it should even out on a monthly basis otherwise.

Choose here https://chiapool.directory/

Not really.

The only thing you need to avoid is cheating pools with hidden fees.

Personally I prefer to use FlexFarmer and since it only works with FlexPool there is not much choice involved.

If the official GUI was bearable and I for some reason, wanted to switch pool, then I would probably go with SpaceFarmers just because they are small and seem nice or Space Pool because they are biggest and there is often safety in numbers.

TLDR: You can pretty much chose any pool you want and as long as you avoid ending up with a cheating pool it doesn’t really matter, except for the pool fee which is tiny anyways (up to 1%)

P.S. If you go with a very tiny pool you will also notice a larger variance in payouts from day to day but it should even out in the long run.