Actually Winner Bro, I dun understand how you related TT to Koi Kinrara. My sister bought Koi Kinrara and yes Koi Kinrara is related to Koi Tropika which Koi Tropika has a really bad reputation due to the management there.
As for Developing Company.. I didnt see any relation regarding Koi Kinrara and The Zest.
Koi Kinrara Developer is Lingkaran Naga Sdn Bhd. which is a Sub from MasterON Sdn Bhd.
MasterON Sdn Bhd is a company which falls under the tree from Federal Furniture Holding Berhad which FFHB Mr Choy is also MD for MasterON. (correct me if im wrong)
for The Zest...
Zest is develop under Darul Dinasti Sdn Bhd. which falls under Trinity Tower Group.
so.. TT Group MD Dato' Neoh Soo Keat.
rrr... I dont see any realated issue from TT to Koi Group.
but.. Koi Tropika really have some management problem. But IMO every condo or service apartment would have their own problem. Heron does have their problem too. I bet Zest will have in the future too...
We should not judge Koi Kinrara before its completion, every buyer have their view and decision to make. and we respect that. A good or bad project of previous developer is just a reference and guide for people to take note. So even Good reputation Developers have abandon projects too.
Just get finger crossed and hope to the house you bought its good and be happy with it.

peace
the above analysis is already common knowledge to every purchaser. legally there r absolutely unrelated but in substance what winner trying to point out or hinting is the fact that they both (whether developers, directors & mgt teams, ex-employees, etc.) had been once upon a time, co-habiting under 1Umbrella. care to elaborate further, winner? or if it's inconvenient to mention here, why not pm me.