No much mention of specific places in Irvine other than my post about the Landings area in Woodbridge.
I think TRock has some good displays... and maybe up in TRidge.
I drove around Quail Hill last year but I didn't see anything very spectacular... seems like the older 'hoods have more since they have been building their inventory every year.
I'm a bit upset as one portion of my LED multicolor strand is dark... I thought the LED ones were less susceptible to that. Now I got to go through each bulb and figure out which one is the culprit.
As to my personal favorite near Irvine--Go to Olwyn & Red Hill in Tustin. You have a whole block of homes participating and some give out hot cider and snacks as well.