I am waiting for the new MacBook Pro to come out with Penryn processor, but I don't know if it's better to wait longer for the Montevina chipset, which should give a boost in terms of overall performance, according to several threads on the subject. Should I notice many differences between the two models? Given that rumors about a forthcoming MBP update are consistent, I wonder when the Montevina ones will be released... I suppose not before September-October (at least 6 months after the rumored speed bump with Penryn). Am I trying to predict too much? What's your opinion?