Which is better looking is never an absolute, but a matter of personal opinion. And rarity is a bi-product of low production, not a performance trait. But for the record, both the GT and 430 are reletively rare. $100,000+ cars ussually are.
As for
Ferrari building the best naturally asperated engines, well considering that they are probably some of the most costly, they should at least be up there.
That V8 bike is pretty cool.