Thunderbolt.
MacApp store.
Free developer tool suite.
MagSafe power connector.
Aluminum frame (cooler)
Thunderbolt has a total of
one peripheral available right now. And as long as Thunderbolt stays exclusive to Macs, that number probably won't change much. USB 3.0 is backwards compatible with thousands of devices and will have thousands in the very near future, if not already.
Anyone who knows how to visit a software vendor's website can get by without an App store just fine.
If you want to develop for a Mac or for the iPhone then you're right, a Mac is necessary.
A power connector is not the type of thing I'd expect to influence decision making for computer purchases.
The Dell Precision line has an aluminum
and magnesium alloy chassis :biggrin:.
Not too strong of an argument for purchasing a MacBook Pro over a precision, especially considering (17" models compared):
The Precision has faster processor options, has upto 4x RAM (32GB vs. 8GB), double the amount of video memory and stream processors, ability to display on upto 4 screens vs. 2 for the MBP, higher resolution, RAID, SATA 3, Blu Ray, Integrated broadband, Bluetooth 3.0, larger port selection, optional touchscreen...I'm sure there's more than that.
Saying a Mac has more features that PC's don't have is just silly, the closed nature of Mac's by definition means they'll always have less options.
Not to mention, a comparable spec 17" M6600 is about $400 cheaper than a 17" MBP optioned to the max. AND, the Dell comes standard with a 3 year warranty - add another $350 to the Mac for that.