Which is the best thread count for a set of sheets?

I’m looking to buy some good soft sheets that don’t get those fuzzballs on them after a few washings. However I don’t completely understand the thread count. Do I go higher for better sheets or is there a certain number that I could just get? Like 200 count or maybe 250…does it go higher than 300? Or is there a certain kind of fabric that has nothing to do with the thread count?