I highly recommend grand rentals. Their rep was careful to understand my needs, and communicated with me to let me know when he would arrive, which was right at the time I requested. Grill was clean, gas bottle was full. Billing and payment were online, very straightforward.
I would note that the grill is a two burner portable. We were barely able to fit 8 burgers, no warming rack for buns, etc. They did not offer a larger size grill. On the other hand, it was easy to move around to get out of the wind. Iif this size works for you, I highly recommend Grand Rentals.
