LOL
yeah - they only have one mouse button. which in the Mac world is all you need, according to Mac people. but there is multi-button support built into the Mac OS... so I'm lost as to why you don't have the extra buttons there on the actual computer. I know that you can hold down the command button with the one mouse button as well and that is effectively right-clicking - also many have told me that you can plug in a mouse that has many buttons and they will be supported... fantastic - but the point of a laptop is to have it all right there in one nice package.
My current HP laptop has a touchpad, a right and left button, and a middle button that is a tilting button that allows scrolling - I now get annoyed when I use anything else that isn't setup like that (as far as laptops go).
anyway - assuming you mean the Powerbook G4 as in the Titanium laptops, I will say how I feel on them. Perhaps code and other mac people will chime in how they feel.
I love the way it looks. At first glance it has great lines, is kinda shiny, and just looks futuristic and cool. It has a nice large screen and a good graphics card in it.
The issues that I have with it, or Macs in general are:
(and none of this discusses the different bus speed options b/c I don't know enough about how their motherboards work to know how well they are using the bus speed - there are two options that I know of - 100 and 133 - but perhaps those are only on the desktops. generally speaking, the faster the better though for bus speeds - that said - Mac does funny stuff and won't right out tell you - like their X Servers claim to use DDR ram, but their bus limits the thuroughput so that it is the same as the cheaper SDRAM - yet they brag that it uses the DDR, which is waaay more $$$)
1) the beautiful Titanium cover on it conducts heat. Both the G4 processor and the video card chip, as well as the hard drive put off a good deal of heat... which is then absorbed by the full titanium cover of the laptop and it disperses it into the world around it. Which, much like an additional plug-in mouse, is just fine if you are using it at a table, sitting there with it in front of you on the desk. But if you are indeed using it on you lap, then it gets far too hot for that. (I've only experienced this with the highest end one - perhaps the slower processor runs less hot - but I would guess that the video card alone is enough to crank out the heat - it is a poor design).
2) the OS X used to be pretty and have good ideas, but overall sucked.
But not anymore - I am to the point now where I actually think I like OS X. It is Free BSD (I had thought it was Open BSD, but I was wrong) with a pretty interface that is fast and stable. they finally have OpenGL support in it that is good, and the interface is fast now (I hear the command line support is slower now though).
That said, I still don't totally agree with how they do some of their UI stuff, but it is totally integrated into how a Mac works, and they have spent millions on research into UI stuff, so they must be right
3) I mentioned the mouse. I hate the mouse - it needs at the very least, two buttons.
4) the software is all up in the air - it depends what you need to do. Mac has equivalents of most all Windows stuff. if you want games, it still doesn't have it all yet - but they do have a lot - and now that they have strong open GL support, there will be more.
5) speed. you mention that you need more speed for what you do. Mac will brag up and down all day that they have all kinds of power and that they are supercomputers, etc etc.
Figure out what you are going to be spending the majority of your time doing, and decide how much faster you need to be doing it. Then do research (and not on the Apple site) on the web as to how much of a speed increase (if any - it is very feasible to get a slow down in speed as well) you will get with a G4.
I say don't do the research at Apple's site because they stand to gain from manipulating how they present the facts. They will frequently brag that their system will open Photoshop 33% faster than a Windows system. "Open it"? who gives a shit - tell me how fast it is dealing with large images, or render effects, or just about anything useful.
In the end - you need to decide what you will be using it for, and how much of a factor of "wow, pretty" is to you when you buy things.
It looks cool, but in my opinion you can get a kick ass PC laptop to do just about anything, for under $1000. It won't be shiny, and it won't have clear jelly things at the top of the screen interface. But it will do all you need, and not start at $3K like the Mac does.
personally, were I going to get a Mac, I would get a desktop system with the dual processors - that is the only way I can see anything close to a cost effective way of using them.
the rest is just a matter of "ooo, cute"
(also, the rest of their laptops have annoyingly small screens IMO, and the iMac as well).