id rather buy a Mac Mini and use that extra $500 on an iPad 2, bam 2 birds one stone mobile and i have a dedicated computer hooked up to my TV
This is exactly what I was describing to a friend recently of what i'll most likely be doing in 2-3 years when my 2009 MBP goes away.
I can it now, a Mini connected to my HDTV, with a wireless Apple keyboard and trackpad on the nearby couch....and of course an iPad 4 as my main day to day. Serious. Once I get my own place, this is the route i'll be taking. By then i'll be out of university and will not need a MBP as much anymore. The wireless keyboard connected with the iPad would be more than enough.