HH and LF and EL are gated. the unit i suggested @ impian emas is also gated. G&G scheme are becoming quite popular in johor.
from the tone of your posts, seems you're going for luxury, slightly more atas environment and branding. in which case, you may want to register your interest with UEM Sunrise as i hear (from this forum) that they are planning to launch landed housing near puteri harbour. your budget should be >1.5M thereabouts.
you did mention "key thing is affordability". well, these few devt you highlighted isn't gonna come cheap. just fyi.
good luck!