First time I've used one of these, and I must say it definitely helps with small weeds.  Handle was a little rougher than I expected even for wood- very noticeable after the test run through my garden. The head is solid, and unless your using it for something substantial (not what it's intended for, btw) or you hit rock, there should be no concern about the head flexing.  It is joined to the handle securely, and I can forsee no issues there.  I agree with the other posters, that a sharpened edge on this tool would make it even better.  I will certainly get much use out of this, but only 4 stars for the rough patches on the handle.