– I started with the Zenport and it worked fine for a while, say 30 minutes. Then it broke. I estimate it weeded about 10-15 square feet of paver cracks. If your patio is larger than this, I suggest not buying the Zenport model.
– Similar to the Gardena model, very sturdy and well made.
– While I didn’t test it as long as the Gardena, the blade stayed firmly secured the whole time I used it.