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Others noted that his vision has little in common with the current future of " web services " being promoted by most XML vendors . Whereas most PBX vendors have their own specifications for all of the internal equipment in their PBX , a standard power supply from any computer can fit just about any computer . Remember that most notebook vendors have a variety of lines to choose from , so it 's worth it to shop around , even within one brand.Apple Titanium PowerBook G4Rating : 87The Apple Titanium PowerBook G4 , weighing 5.3 pounds and measuring 1 inch thick , is a sleek notebook that doubles as a multimedia PC .