Hybrid crossfire is a mixed bag. It will give a reduction/boost of anywhere between -20% to 40% depending on what you are doing, but it may also cause micro-stutter and it doesn't work with DX9< games.
Avoid Acer like the plague. Lenovo has a pretty good reputation, I would go with the Intel one
Both are made by the same ODM's. The vast majority of laptops on the market are manufactured by a small handful of Original Design Manufacturers (ODM). Major relationships include:
Wistron (former manufacturing & design division of Acer) sells to Dell, Acer, Lenovo and HP
Quanta sells to (among others) HP, Lenovo, Apple, Acer, Toshiba, Dell, Sony, Fujitsu and NEC
Compal sells to (among others) Acer, Dell, Toshiba, Lenovo and HP/Compaq