Hello Ramjade,
how is your investment doing, sounds like you are making more than most of us here

i am no expert in financial as you know me in FSM i just hantam buy and see.

Anyway, bonds are just diversification from FD ASX, esp if you have too much there.

Not true to say gd bonds pay only 4-5%, 
PBB (2009-2059)  AA coupon  7.5%
OSK Medium Note 2010-2020 A2 7.25%
CIMB Tier 1 perpetual (2008-2039) AA 6.7%
say only Perpetual, tipu lah! all of them called back,
dont call back i am more happy.

Now lower CIMB perpertual  2016  5.5%
buy corporate then, unrated also take
Tropicana 7.0% Ecoworld 6.4 Mahsing 6+, Affin Single 5+%
No default so far, best part is buy below PAR and at maturity call back make another tidy sum
who say bonds not gd......maybe properties better, buy rent then sell.
Got a unit bought 48k 6 yrs ago now agent ask me wanna sell 205k nett

buy from bank/investment bank RM eg CIMB

All already called back except the last one still running

Plenty Australia bonds (not the best rating but pretty good) available currently and China ones.

these days no more such high coupon rate 6-7%

and yes good bonds are usually oversubscribed,
and each RM has only limited quota,
must book early to be on top the waiting list

Both from banks