You might already have bought one as its a while ago since you posted but just in case you are still looking I have been investigating which one to buy. I found a "Gutter Sucker" which is £888 incl vat. it has carbon fibre poles, 60 ltr wet and dry capacity tank and 3 x 1000 watt motor. This seems a mid range gutter vac and one that I hope to buy in the next couple of months. If you have already bought one, how have you got on?