I wanted a 2 wheeled large 'airline check in capable' tough bag. I figure 2 wheel is better on rougher terrain than a 4 wheeler. This comes in at 154cm (WxDxH). 3.7kg. It gets excellent reviews. The only feature it doesn't have (which some big bags do have) is hidden backpack straps. There is a compartment on the back, so if you're handy you could add some.
Buy the red or grey version for $236.95
(I had it in my cart for a few days and got sent the code L2R15 for a free pair of (no doubt rubbish) sunglasses)
EDIT - current best price found by step_andy (they just lowered it)
http://www.freestylextreme.com/au/home/brands/osprey/osprey-…
$236.95 with free delivery
I bought the red here (and they have a known good rep) before I found the sites posted above :
http://www.chainreactioncycles.com/au/en/osprey-shuttle-100-…
The code NEW10 is meant for new users of the site (but worth a try anyway). It gives you $15 off. However their price match guarantee is so horrible I can't recommend them now.
Product page
https://www.ospreypacks.com/au/en/product/shuttle-100l-30-SH…
There's also a 130 litre version (Shuttle 130), but I think that would be over most airlines size limit and you might have to pay excess.
They're also known as the Shuttle 30 and Shuttle 36 if you're looking for reviews.
Grey 100 one here with code BMCWT10 (as found by xtremehuzzah) $257.59 if the freestylextreme one goes back up.
https://www.webtogs.com/en-AU/Osprey-Shuttle-100-Luggage/365…
Some other good looking ones
This one looks like it just has the one big compartment and a full width handle:
https://www.webtogs.com/en-AU/Lowe-Alpine-AT-Wheelie-60-Lugg…
https://www.webtogs.com/en-AU/North-Face-Longhaul-30-Luggage…