Prior to using the Macbook Pro, the notebooks I've used had been various Asus and IBMs (I've used every model from the T40 - T43). The "hinge" on the Thinkpads were all more snug than on the Macbook, which is not to suggest the latter is flimsy.
The Asus I used was the model V6V. In design, it is very similar to the Macbook Pro's. Asus was once a major OEM for Apple, and the Macbook Pro's construction characteristics will be very similar to the Asus V6V. Since it's such a dated model, I'm not sure if you can find one to examine in closer detail.