My neighbor has a 6 inch Vermeer chipper.
Comes in handy but it is slow and you need to cut up notches or points where branches split if they are too big.
Good for a landscaper. What are your main uses for it? Small brush jobs etc... Maybe rent one for a day and see if you even like it.
Overall they are a good small chipper. Brush Bandit has a good reputation with the guys on arboristsite.