[sidman]

It all comes down to the development you like to do. There was a time when i really didnt like paying extra cash for a macbook (that at the time) seemed like it was more expensive then the equivalent spec'd windows laptop for no reason.

However now, i cant do without my macbook because for web and mobile you really dont need anything else and the frameworks can be configured locally without silly things like cygwin.

Alot of the developer tools are built in and you can do iPhone and android development also (obviously on windows or linux you cant do iPhone dev ) which means if you ever do decide you need to develop an iPhone app as part of your offering you are going to have to get a macbook anyway.

The only downfall is if your still doing any blackberry development you can't do it on a mac though you could always circumvent that by using a VM.

[officialchicken]

I use a late 2010 MBA with nvidia graphics for CUDA development. Apple's agreement with Intel doesn't allow them to make products which use nv chips anymore, so this is probably my last Apple for a while.