Individual 1mil range prop I have in my porfolio, still alot of small pieces of littering and cigarette buds at the tamans. Still the garbage not managed properly and simply put at front common area. And awnings installed sampai water dripping to neighbours side. And of coz the forever argument, the emotional imbalance of the paying vs non-paying neighbours. This alone will lead to slackness from the guards because of the difficulty to filter the real owners from the visitors.
And of coz as pointed out in this thread, some people just lack taste la in their reno.

I also happen to have half a mil strata landed, I just like it better, as Jacky Chan said, people needs to be managed (angkat kaki CCP but its true).

My personal preference, I will go for individual title only when I can afford bungalows, bangsar damansara heights, then ok I take care of my own security, neighbours are classy and educated abit, then it will make sense.