however with bootcamp and parallel os compatability on the mac as claimed by mac i want to knowis it really possible and comfortable to us e a mac and should i switch to a mac based system.
I used to use Parallels, now use VMWare Fusion, similar concept.
No problems at all. I don't have a stand-alone windows machine any more, I just have a copy of Fusion on my Apple laptops and desktops.
Seems to cope fine with whatever I've thrown at it. Although I'm not a "gamer" so if you care about lag and whatever other stuff gamers constantly moan about then maybe a non-Apple would keep you happy. Same if you know you will you will be doing lots of Windows based CPU intensive stuff (e.g. Photoshopping large files).
But overall, if you just need windows for average home/work stuff then I doubt you would have a problem using it in a virtualised environment. Just make sure you are not stingy with the RAM.
Bootcamp is not virtualised by the way, it is true native Windows. Bootcamp is only there to provide hardware drivers.
So I'd say take a good look at the Apple side, perhaps pop into an Apple Store if you've got one near you.
I'm also quite familiar with the Toshiba Portege range, and if someone asked me for a recommendation for a laptop I would probably put them at number two on my list (i.e. seriously consider Apple first).