My 400 square meters of lawn were heavily matted in the spring, so had this year even a scarifier ago. The Wolf UV 30 EV is rather out of the low-budget department yet met my expectations. My lawn is now back to normal, that's what counts in the last analysis on. The work was a bit tedious because of the extension cable, but since you only 2x to scarify a year, I can live with it. The rakes and clearing away the grass-section naturally takes his time. A collector makes no sense here, because he would constantly full. It really comes down to a ground felt from the lawn ... If the felt is too dense, the motor switches between times from briefly. This is normal and is designed to protect the unit from overloading. I then screwed it slightly lower and then the dropouts were less immediately. The rotary switch for height adjustment needs seeehr many revolutions before time doing something - I thought at first before he was broken. But after about 20 (!) Full turns the blades were then just over 1 cm higher, that was enough. I now drive him 25% before the lower stop, just try it! Clean and store are also not a problem, the handle can be folded at 2 joints, then the device can be kept very compact. A long-term rating of course I can not give, but the wolf makes me a robust impression. Conclusion: For small to medium lawns fully recommended!