curved ones conform to the windshield better, but straight ones are fine too. I think some people said the 40" ones are too long. As for Ebay shopping, all the ones from china are pretty much the same. The original creators of LED light bars is Rigid, but be prepared to spend $200-$500 on a big bar. I would have gotton a china one if I had gone with a lifted pat rather than lowered. I just dont have the money to fuel an offroad build lol.