I don't use propane grills but Cook's Illustrated did a test back in 2010 and pronounced the Weber Spirit 210/310 winner in the mid priced category.
COOK'S ILLUSTRATED wrote:
Highly Recommended - Winner
Weber Spirit
A strong performer from Weber and just the right price. Front-to-back two-burner configuration allowed varying heat levels over the 350 square inches of cooking surface. Chicken thighs and steaks developed good crust when seared, and thick eggplant planks browned evenly over every point on the grill. Extra features include a built-in thermometer and attached side table. If you need more cooking surface, and have a little more money to spend, we also recommend the three-burner Weber Spirit E-310 ($498)
HTH!