Surf faster? That would surprise me.
I've got the Quicksilver G4, and a G3 Powerbook. The speeds of each? It hardly seems to matter anymore. They're both plenty fast for Photoshop, Final Cut, Safari, and Word Processing.
It used to be that each successive generation would make a meaningful productivity gain, as chip speed increased. I remember having to break word processing documents into 15-page pieces so they wouldn't slow down the Mac IIci I was working on. At some point, though, these machines simply sailed past the demands of anything but -- I guess -- the types of software that I'm still not using. Even editing video seems to be pretty much the same on either of my two machines.
When it was time to replace my Powerbook, I kind of instinctively looked at the top-of-the-line Titanium models -- and then realized that the iBook was fine for what I use a laptop for. As it turns out, it's pretty much the only computer I use, in spite of the faster one on the desk.
I mean, I'm glad they keep making them faster, but the applications that need that kind of speed simply haven't found their way into my life.
Maybe I'm getting old.