When it comes to purchase a chainsaw which is most suitable for the kind of work you are going to perform, you may come across with certain level of confusion because there is huge collection of chainsaw models is available in the market launched by different brands. To address this issue. Many online portals are dedicated to review the different products to make it easy for users to choose an appropriate product. William Grimm’s reviews given on his site are one of them and have proven to be very useful for various domestic and professional buyers. Here we have given the advantages and disadvantages of Echo CS 400 gas chainsaw taken from William Grimm’s detailed review of this product.