I have used this grill 4 times and have had no issues with it. The burners fire up very quickly and get to heat quickly.  I don't always use all three burners, and like the ability to cook small amounts on only one side or in the middle. 
The only downside I have found so far is that the large wheels are stable shelf side. I needed to roll the E310 through a gate and across a soft grass area. In order to do that I was going to lift the left side of the grill up at roll the grill "wheelbarrow" style. Well, the adjustable shelf is on the left side and you cannot use the shelf as a handle to lift. Consequently I had to load the grill on a large 2 wheel dolly and take it through my gate on its back. Fortunately I have a 48" wide gate to get it through.  It rolls ok on hard surfaces. Maybe engineering can correct this in 2019.