As an extention of Comparison towards choosing between IT products, I would appreciate some REASONing from portable/mobile PC hardware aficionado's to provide for comments to choose between : Lenovo & ACER as two engineering manufacturers rather than BRANDS, hence some significant technical analogy between Lenovo's IdeaPad Z560 with Intel i5-450M OR the ThinkPad's with Intel-i5 processor and that of ACER's Intel-i5 based ASPIRE series with 15,6" screen size to enable better TCO management for a professional user. Pls also clarify the truth in the statement: that Business Laptop's can be installed with any OSes(multiple OS boot) with no issue of driver support, but driver support might be a problem in case of Consumer Laptop Model's like the Lenovo's Y560, etc ?