Kayakers: Do you have any suggestions for an introductory sit on top model?

I’m looking to buy my first kayak and am pretty sure I want to go with the sit on top style. I’ll be paddling on a river in flat water for the most part (I might to some very tame whitewater when I get more experience). I’d like something stable, durable, with a decent amount of storage. I don’t need anything too fancy or high tech (plastic construction is fine), but I don’t want to go so cheap that I’ll regret it later if it starts to have issues.

I’d love to hear your thoughts/suggestions for brands or models of kayaks that you would recommend or things to avoid.