The positive: Love the grill, good temperature control, cast iron drill grates are the best, very versatile. Have owned many Weber products and don't see better products for the price.
The negative: 1) Access to the LP tank and it's attachment is extremely difficult. Was fixed in more recent models by mounting the tank outside. 2) The flavorizer bars are enameled steel. Not a problem if you grill only occasionally but in SoCal we are outside all the time. The rub is for the Spirit E310 they don't offer a stainless steel upgrade even if you are willing to pay the premium. Booooo!