The sun visors that are on some of the baby seats are not actually recomended to use because the trap the heat around the baby & they can get rather warm under there. I never bothered with the visor from my seat as I found it to be a PIA. Then I read about them carrying the risk of overheating the baby & was glad it was a PIA & I didn't use it.
I like the new HIpod range that Target have. I have the booster seat for Evan & if I needed to get a new baby seat I would get the reversable seat that Hipod do. I am pretty sure if you google HIpod you will find the seats I am talking about.