The way Wodenus puts it:

EUnittrust is like eating chap fan at Kedai Kopi Ah Lien at nondescript shop in old Town Petaling Jaya. Everything self service, no frills and cheap ... but keep your belly full and satisfied.

FSM is like eating a meal in a Dai Pai Thong that have waiter to take your order.

Pub-Mut is like going to a Chillis for a steak.

Private Banker is like going to a Michelin star diners where you pay for the prestige and get top notch service and good looking waiter / waitress to look at!