best or better???????

Sorry mate, no answer to your question but are actually a pub publican?

Nice southerly coastal fishing trip someday.
Chris

I've never been to Moreton!

but of the research I've done i can't see that you'd occupy 10 days.

FRaser on the other hand...

I've never been to Moreton either, we'll go one day, but not until we've exhausted ourselves on Fraser Island.... INHO Fraser is Paradise on earth!!!!!! For 10 days you will have plenty to see and do and no chance of getting bored!!!!!!!
Just take care of it!!
Just my opinion
Cheers
Brian

Have recently returned from Qld and visited and camped on both Islands.
There is no simple answer to your question as everyone has different objectives about how they can best utilise their holiday time.
Moreton is close to Brisbane, it is a small island and circumnavigating it is not possible at low tide particularly at the s/w end, we had to stop and wait for the water to receed before we continued. The island is beautiful in an untouched sought of way as not many people go there (no backpackers in troopies) possibly due to the higher car ferry costs. Beach camping is great but take some sandfly repellent.
Fraser island is huge and well travelled, getting about is easy. There are lots of inland tracks that take you to the various lakes, some tracks can be a little rough. Beach camping is plentiful and there are various shops along the beach for essentials.
We found lots of backpackers in troopies south of Indian Head but further north
things quiten down and that is where we spent most of our time, there are some good spots to camp around ocean lake.
Accessing fraser by barge is cheaper if you do it from the south end (inskip) and the run we had on the mainland beach from tewantin to inskip (at low tide) is not to be missed.
Picking either island is not a hard choice as im sure you will enjoy either of them and dont forget to reduce your tyre pressures befor you hit the sand.

If you're trying to avoid crowds go to Moreton ... top spot and similar to Fraser only on a smaller scale. When comparing costs there's not a lot of difference after taking into account the cost of getting to Inskip Pt. versus the mouth of the Brisbane River.

Fraser is undoubtedly the pick of the two but Moreton is a top spot to avoid beach maniacs. The logistics of getting to the island mean it's very difficult, if not impossible to find you're sharing it with 1/2 the population of Oz.

CheersFidei defensor

Rosco