I use the Gardena pump sprayer professionally in constant use. It is used in the construction of museum exhibitions to moisten sheets that are mounted on glass panes. The capacity is perfect, not too heavy when standing on top of a ladder, not too little. Visually and from the processing, he makes a very good impression. In operation it is working so far - a few months - flawlessly. The spray can be measured precisely by the water jet to fine mist. However, the nozzle adjusted from time to time by itself, so you have to re-adjust from time to time. The wide handle is pleasant to use. I'm ready very happy with the product.
Supplement of 10 September 2014: After a year of intensive use is now the pump mechanism, so the internal mechanics, faulty. The wide handle rattles to building without pressure. Trying to repair the spray head, failed. It can be screwed though, but jumped me right against some metal beads and the other inside. I find the device nevertheless recommended, maybe not for permanent use, but for private interests with moderate use.