jalan ampang is too soul less imho. too oriented with purpose filled destination.
i.e. international school targeting specific group aka $$$
glen and prince being a $$$ specialist hospital
no place to hang out, no party zone, no local delights lepak corners such as kopitiam, pasar malam, etc.
am talking in terms of general ya, and not specific.
come weekends and holidays, among the 3 streets, which is the most desserted?

okr and jk excels in local spots. bkt joints, massage parlours, food courts, banks, clinics, schools, post offices, hypermarkets, etc.
come day or night, weekday or weekend, it's usually still filled with activities.

pearl suria is doing surprisingly well. and i like the little commies near hsbc/old town. gateway to 9 seputeh and link to pantai area. these small hubs coupled with those specialty restaurants (i.e. japanese, burgerlab, etc) are a big draw still. hoping simplicity by exsim is able to do something to this road eventually.

jk needs a major upgrade to its road to begin with. hope that mrt will push for modernisation of the road to a dual carriageway both ways at minimum (hopefully three). then the industry area would eventually be stripped away akin to pj section 13. the developer who just acquired a major plot in jinjang will benefit greatly when all these are in place albeit a long long way to go.