I purchased a new 20 ft G3 Bay DLX with the 150 SHO in March of 2015. In the initial literature G3 advertised a top speed of close to 60mph with the 150 motor.
At first the boat would not get close to 50 MPH and was very slow to get on plane with the recommended prop.
Luckily the dealer I purchased it from had sold one to someone who really knows boats and we were able to figure out some things.
Finally after doing a little grinding on the hull at the transom and a prop from Yamaha R&D the boat jumped on plane and will run 53 light.
I am pretty sure that the 22 will get close to those spec sheet numbers with the 200 SHO.
I also like the Xpress boats and was undecided on which boat I would end up with. My cousin has a 20 ft SWB the same year as mine and I have fished the flats with him.
Both boats are an excellent choice imo. It came down to there being a solid G3 dealer closer to me than an Xpress dealer and thats the reason I went with the G3.
Over all its been one of the best purchases I have ever made. Really happy with the boat and service I have received.