AL-KO 32VLE Combi Electric Scarifier - A very good product. A job that would normally have taken me two to three days was completed in a morning. The amount of moss and thatch that this machine extracted from my lawn had to be seen to be believed. The collection bag filled up so quickly that I stopped using it and just raked up the moss afterwards. I found it very easy to change the scarifier for the aerator. My lawn was very dry and I would recommend using the aerator on a moist lawn as it did struggle at times. This is not a critisism of the product as the ground was rock hard. The only downside to this machine is a small collection bag that is fiddly to attach to the machine but apart from that it is a thumbs up!