Yeah I hear the 360 controllers are **** sweet for PC use.
And as for the Saitek 3000, I'd agree with that, I myself have a
Saitek P880 controller and it is a fantastic quality controller. The build quality on it is solid, its got a decent weight to it, its the kind of the controller you pick up, feel the weight and size of it and know that its not a cheapo one that feels like you could break it in an instant. Its kinda like a mix of a Saturn and a PS2 controller, 6 main buttons on the front but with only 2 shoulder buttons as opposed to 4, although the 6 front kinda make up for that. The analog sticks are nicely built, pretty tight moving so they do the job fine.
My only gripes with it is the D-Pad itself, if it wasn't built with the diagonals in mind so much it might be a lil better in my opinion. But for £20 (when I got it anyway) its a fantastic bit of kit, if you can find the better options, ie, the wireless/force feedback options for same price tags, go for those.