Long term or short term?
If this is a long term boat, Parker will get the job done for the right price. You can fish the heck out of it and much more fishing room, no 4 foot "eurotransom" included in the claimed size. More boat for the money.
The Grady's are overpriced, surely not the best boats in ride and other things like the 'cored deck plague of the 80's' and tons of silicone all over the place to keep water out of the bilge, but like Harley's, they have a following and command a price. You will always be able to sell the Grady if you fish it lightly and keep it pretty. They don't really age well when heavily fished, Whitewater Marine has been sitting on a few examples of this all summer that they can't move.