I am partial to the MMM, but maybe because it was my FIRST stay at SDCC16...work provided the room 2016-2018...but now I'm freelancing at SDCC and have never gotten MMM in the lottery. Got lucky and scored 3 nights in a single room in 2019 (some rooms became available about 2 weeks before that con) and I ditched my room-mates at the Sheraton, lol. Have stayed in both MMM towers--but beware the street-facing rooms opposite the light rail stop...you can hear DING DING DING into the wee hours, lol. Still wouldn't keep me from that room, though. Stayed at HB once, the rooms were not as nice and while quick to access the ballroom there if that's your program hangout, it's oddly further to walk to get to the end of the Hall H line. Uber's have a hard time getting to it when the roads are closed (must take a very long route around and approach from the south.) Trying Manchester Hyatt this year...just a titch farther on the marina walk than the MMM...might be a good second to MMM!