No.
Actually I am very happy with my Delta/Porter Cable stuff. One other factor was that the Delta can only be used in a vertical position. The Hitachi can be used in either vertical or can be switched to a horizontal position. I have used it on scales and other small items and it has worked fine. I guess I won't be able to compare the two because I only have the Hitachi and have not used the Delta.
I do still recommend the Delta products. I have a compund miter saw, a small table saw, routers, circular saw, sanders, etc. They have all held up very well. I have not purchased a new Delta product in years so I dont know if they took a drastic change in quality.