Bought this to replace a Weber Q 200, which was a fantastic little grill that changed my mind about gas grilling. I'd always been a charcoal purist before the Q, but decided to give it a try and was amazed at how consistently beautiful and delicious my grilled items turned out. Unfortunately, there were two downsides to the Q: 1) the size - with four of us, grilling main course plus side items invariably turned into a juggling act with some items getting cold before the others were done, and 2) one burner meant no real option for indirect grilling. The Genesis E-320 addresses both of the concerns. I'm getting the same great results (even cooking, beautiful sear marks) but more surface area and better temperature control.
I almost pulled the trigger on this grill last season, but I'm glad I waited. Thanks to the new burner design which places the knobs on the front, you now have more surface area on the side for prep, etc., and the fore-aft burner configuration makes more sense for indirect cooking. All in all, it's a solid, well-designed grill, which, most importantly, produces fantastic food consistently.
TIP: Use the grilling guide included with the grill. The time/temps are perfect for all kinds of grilled items. Also, if you have an iPad, get the Weber grill app. It's great.