09-16-2010, 09:09 AM
Portability vs Performance.
You are paying more for lower specs, to get the portability, and is always going to be a trade off.
When you get a sports car, you get less seating and luxury options, but this doesn't make it a bad car, just not as big as the others, and you pay more for it
In saying that, the i5 and i7 MBP range is by no means a poor performer.
Even the MBs are little work horses, where as the i5 and i7 MBP are big work horses.
In most cases, users won't even utilise the potential of a MB, yet alone the high end MBPs, iMacs, or Mac Pros. We all want the biggest and best, but if you like the idea of portability when you want it, your choice of the MBP with the external monitor is a great choice.
If you need extra bang for your buck, go with the fastest processor you can afford, and upgrade your RAM and HD later down the line, which is cheaper than Apple, and will not void your warranty.
Edit: Ride got in there first, covering what I said very well, in fewer words