We've got the Supercheap one - $40 RRP. I like it, it's reasonably well made (as far as I can tell, haven't used it properly yet), made out of PVC,
. Not sure what more there is to say about it. It's got a hole in the bottom, and the bottom can unzip to dump all your rubbish out when you get home. I can see the bottom zips getting gummed up and stuck pretty easily though, so doubt that we'd ever actually use it that way.
I was originally looking at the canvas ones, but:
a) didn't know how the canvas would go - if a bin bag leaked bin juice on the inside, would it stain/smell/get gross? PVC doesn't have that problem.
b) wasn't keen on the price. With this one, if I get a year or two out of it and throw it away then it's not going to break the bank to buy a new one.
Obvious downside to the Supercheap one - it's got bright orange piping around it.
Good luck!
Matto