I think they're one of the better ones since they tend to cite their sources clearly. Media bias fact check agrees with me as well.
They are super biased though, and you'll get something between a libertarian and Republican lite perspective (think socially liberal Republicans). They absolutely shouldn't be your only source of news and they're very selective about what they cover, but when it comes to factual accuracy, they're pretty good.
Perhaps you disagree with their political bias, but that doesn't make them inaccurate. I highly recommend reading some high quality news sources with a different political bias than your own to get a broader perspective. It doesn't have to be Reason, but Reason is a decent option for left-leaning people because the factual accuracy is pretty high and the perspective is so different.