Well actually which should my DAD buy
we have seen both at the dealerships and we can't decide!

We need opinions!

lexus......best aftersales service and the cars are amazing...

You cannot compare the two cars, The 5 is awesome, as a luxury sports sedan, the IS-F is a great performance sedan, they are two different cars.

Let's say he decides he likes the is-f, then he should take a look at the m3. I had an opportunity to try both at BMW's proving grounds in SC and while both were awesome, the BMW M3 is unmatched. The is-f is the best Lexus ever, but still not as good as a BMW.

moped! save the world!

They are both great cars, but are in different categories if you ask me. The Lexus IS-F is an amazing car, it is very refined, safe, and fast. The same goes for the 5 series. BUT, they are different types of cars. The Lexus is a high performance car. Whereas the 5 series is a lless agressive sedan. Trus it has good power and can have a sporty feel, but it's just not the same. It all depends on what kind of car u are looking for.

And to be completely honest, for just 1 or 2 thousand more I would go for a Mercedes Benz C63!

cant save the world in a moped.

Skateboard.

Lexus ISF are better my dad works with and on cars for work and i asked him

The Lexus!