Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Same unit with WAY better warranty available

This is a repackage of the Blue Diamond by Watertech. The Blue Diamond is easily a five star item. The issue here is that iRobot only offers a 1 year warranty. You can EASILY find the Blue Diamond for only slightly more with a FOUR year warranty.You want this warranty. The machine is awesome but tends to need work if you use it a lot - and you will. It keeps your pool extremely clean. WaterTech's customer service is OUTSTANDING. You can buy parts directly from them and they have ALWAYS been fantastic when I've had any trouble with my Blue Diamond.I love my roomba and skooba, but iRobot really is screwing everyone with this repackage and SEVERE warranty drop.