So since you have most likely had the pleasure of using both devices could you give any onsite to which one you prefer? Thx
To be honest it depends on the situation. I have both. I use the cannon at home with the gas power washer when I have more dirt to take off and more time to spend on the vehicle. The gun I take with me to the in-laws (8 hour drive in the country) for a wash in their driveway because there is no pressure washer or room to bring two buckets. I bring a grit guard with me and use a garage bucket of my FIL for my rinse bucket.
Some people only have one, but there are times I prefer one over the other and like having both.