I'd say the same. After the rain it pretty much the same, visibility wise.
Mammoth is 3 times larger, deeper, around 30-40 feet. Has a spot that goes up to 60. Has 20+ different objects. Most interesting is a huge military cargo plane C130. No thermocline for some reason. Stinks a tad. Next door is an eatery. Proper restrooms. Looks more fake due to it being less "natural". Mostly no swimmers, just divers.
Lake 288 is smaller, 25-30 depth. But more fish, way more fish, good size too. Really so-so sunken objects, nothing of value to mention. Lately infested by a large amount of weed. Outdoor plastic restrooms. Have to drive far out to eat something. If diving below 15' one needs at least a shorty, gets noticeably cold. 50/50 divers and swimmers.
Mammoth is too far from central Houston, I get tired driving back.