OK, so benchmark tests like geek bench give you an indication of system performance - but what are some real world ways to see how much faster a particular system is than another? I have a Mac Pro 2.66, and wanted to compare to an older 2.3 dual G5 just for kicks. What would do it best? Photoshop or Final cut? Exactly what is the best and most consistent tests to do? Both feel fairly snappy in just regular browsing.