Had the Penfolds Rawson Retreat cab/shiraz at a 21st last week and was quite impressed for what it is and given its lowly status in the penfolds range - what I particulalrly liked was it didn't have any of that sweet fruit cordial nose or palate - actually is was quite mid weight.
For a little bit more why not try the Penfolds Koonunga Hill range. I find the 2001 vintage quite reasonable especially the Shiraz Cabernet at Liquorland for $11.99 per bottle. You get additional 10% discount by the dozen. I recently had a dinner party for about 50 people (all drinkers) and there is nothing left from the 3 cases I bought.
Unfortunately I am in Korea so its not quite as easy as just paying the extra. He is sourcing them through the Australian Embassy and they still cost about AUD $20 each!! Koonunga Hill retails here for around AUD $50.
I told him to go for the eaglehawk riesling and the shiraz/cab/merlot in the end...