If you’re looking for something with a great campaign/single player than yeah the Forza Horizon series is great. you can customize the hell out of your cars, it’s VERY easy to get new cars, and the single player is fun with a lot of variety.
If you’re looking for something “mindless” that you can just jump into and fuck shit up after a long day of work then Burnout Paradise.
If you’re a fan of future racing ala WipeOut on the Playstation then BallisticNG. It’s pretty much exactly WipeOut and you can download via the workship all the old WipeOut tracks and crafts that people have made and made VERY well. I love the game.
well I’m shocked…shocked I tells ya.