we tested IBMs here, as well as winbooks, lenovas, HPs and Dells. for the most part, dell is used throughout the company. the owner loves his toshiba and has me buy him a new one every two years. the IBMs are still here, sitting on a shelf in the back room. the dells we have are all still running, as well as being out on dirty job sites and rarely in air conditioned/ clean environments and seem to last a few years. mine gets used outdoors more than indoors, and is in use more than 12 hours a day. its going on 3 years old, and the only repairs i had done was due to a power spike through a USB comm connection i had with an industrial PLC. i have no issues with support, its been good for the last 7 years that we have been using mainly dells. no one liked how the IBMs sat and felt, and it seemed like i was always working on them. i make the laptop guys here bring them in every 6 months and let me tune them, and usually its just for updates and file transfers.