The RUF Boxster sucks. I'm sorry. Just because you can enter a load of races doesn't make it a good car. The RUF 911 is a much better car as it handles well, is extremely powerful, and is surprisingly lightweight (far more than a Skyline and pretty darn close to a Vette). So what if the Boxster is "flexible"? You can enter all the races you want in it, but when you get the Pro Boxer challenge, you will get worked. Believe me.
As for the Z06 Vette...I think it's a great car, especially considering it's naturally aspirated engine and power-weight ratio. It's definitely a worthwhile investment and will hold it's own against most of the JGTC cars in the Amateur league when fully tuned.
