Continental anything with duraskin will be great. I run conti GP4seasons and they last forever. 7000+ kms of life. Get tyres from probikekit, pay the $19aud postage and have them delivered to your door in about 5 working days. They are cheap too.
I second the GP 4 Seasons, they are a great tyre. Cheap from Probikekit too ($40 or so). Can also get the GP4000s from them at a similar price, I think.
If you're after a good tyre that's unbelievably cheap, check out their Vittoria Rubino Pros. All sorts of colours, 23 or 25mm, very light, decent wear and durability, all for about $20 or so each.