I haven't taken it yet but I've done all the Forza and I can say they are awesome.
if you like arcade racing games, I think you might like this one.
For me, the very first FH is memorable for its music but also for the rest.
I already liked racing games but with this license, i really love it even more racing games.
Now, the game is not without faults : FH have always been "easy" but lately, they are even more generous.
draw/super draw galore (wheelspin), so it's much easier to acquire new cars.
Whereas in the first one, you really had to climb the ladder whether to acquire levels or cars.
Speaking of which, I recently wanted to redo the very first Forza Horizon.