Thanks for all the replies! I'm currently with EquipSuper. They are an industry super fund, but they still charge an arm and a leg in fees (just over 1% p.a).
I've had a think about using a member direct option, but there are additional costs associated with it (additional admin fees, brokerage costs, payment for capital gains, etc). Most of the super funds that offer member direct options also force you to invest a certain amount in their more expensive funds. eg, AustralianSuper forces you to invest 20% of your funds in one of their expensive funds, presumably to recoup some of the cost.
In terms of an SMSF - my current super balance doesn't justify the cost of running one. It might be an option for me down the road though as my balance grows.
I've had a closer look at some of the SunSuper options. They have quite a few index funds that you can mix and match to your liking. Doing some quick calculations to work out the cost to hold $50k for a year in an example mix of half ASX200 and half MSCI world ex AU indexes:
Admin cost: $65
Fee for 50% invested in ASX200 index @ 0.2% p.a: $50
Fee for 50% invested in MSCI World ex AU index @ 0.3% p.a: $75
Total cost (Ex insurance, TPD, etc): $190 per year, or 0.38% p.a
There's also a small buy/sell spread of between 0.25-0.3%, but this is small enough to ignore if I don't switch funds often.
Doing a similar calculation for HostPlus Indexed Balance fund, it works out to be a bit cheaper, but 10% of their allocation is in cash (which is terrible), and another 15% is in bonds (not so bad):
Admin cost: $78
Fee for 100% in Indexed Balance @ 0.14% p.a: $70
Total cost (Ex insurance, TPD, etc): $148 per year, or 0.296% p.a
The good thing about HostPlus is that they don't have buy/sell spreads, so if they jack up their prices, I'm outta there.
So I'm still not 100% sure if I'll go with SunSuper, or HostPlus, but at 0.38% and 0.296% p.a, I don't think I can go wrong either way.