If you want to go cheap cheap, I picked up a Char-broil grill "Dual Fuel" unit. I have an older version of this. I think the dual fuel conversion kit was about 70 bucks, so for around $400 with tax, it's not terrible. I've had my grill for about 7 years and it's held up without too many problems, my knobs melted when I had all 4 burners going on high, but they may have fixed that issue since. Replacement knobs aren't that much.