Not that I have a WHOLE heap to compare, but here are my list, from best to worst....

1 - QANTAS.......comfotable, legroom, decent food, incident-free....and quite punctual, the times I've flown with them...

2 - Air New Zealand.........Not overcrowded, clean, half-decent movies...

3- Vigin (domestic In Aus only, I think).......Not good, buggerall legroom, unless you have special needs, they assign you a seat when you check in.......they have a policy of putting families together, up the back, so the babies can cry and shit their nappies together, and when a lone traveller like me checks in, they put me near them....CRAP And because it's fairly cheap, it's chockerblock FULL ....plus, you have to buy your own food, which I don't mind, but there is no variety.....

4 - Jetstar....Similar experience to my Virgin flight...

5 - Argentinian Airlines...think they're called Airlineus, or something, these days....HATED it....HOURS late, because the last stop was Beunos Aires, so I guess they have to be thorough for drugs.....and as soon as you touch down, security at the airpost seems to just zoom into passengers from that airline like a fly to shit