Nah, corporate bond yields are abysmal at the moment for anything with a decent credit rating. On a risk/reward basis you're better off just putting your bond allocation into a Term PIE to take advantage of the decent rates and tax benefits.
Edit: Just had a look at current prices. Only bonds that are yielding above 5% at present are junk/unrated. Even to get over 4% you have to drop below A Grade.
Meanwhile,
http://www.interest.co.nz/saving/term-pie
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