Ok, I *know* I will probably notice the difference somehow, but how will it be obvious in terms of music making? Will I notice it in Ableton Live (more plug-ins?)? Will I notice it if I run several applications at once? How will it affect Max 6? etc.
The reason I ask, is that I want to upgrade from my two year old MacBook Pro.
I am considering the 13" MBP with 2.9GHz (dual core), or the 15" 2.3GHz MBP (quad core). I really like the smaller form factor and weight of the 13", but, of course, I have seen the Geekbench benchmarks for the 15" (about 11.000, vs. the 8.000 of the 13" MBP).
There is also a price difference - 13" is quite a bit cheaper. I already have a very nice Crucial M4 SSD, which will be transferred from my old Mac to the new Mac, so that will take care of disk speeds.