The Acer Aspire 5 is a better choice for those who need strong performance and advanced features, while the Lenovo IdeaPad Flex 5i Chromebook is a more affordable option for basic browsing and productivity. According to CNET, the Acer Aspire 5 has a 'strong performance' and 'long battery life', while the Lenovo IdeaPad Flex 5i Chromebook has a 'versatile design' and 'affordable price' (per Tom'...