Hello,
Great, you're one of those asking first before buying... not some of those buy first , then ask questions later.. which is too late!
Well, you are in the right place first of all... and reading through the comments are right on.. There's plenty of reading materials/research columns etc.. one of them that you should look at is here
Boxster Buyer's Tips
There's plenty of them out there, just be patient.
Good Luck on your search!
t2