It's a good point that Nick alludes to. There are some very acceptable, unpretentious bands around. Think Floyd are one. Their version of The Wall is certainly worth seeing in my opinion. Off The Wall are also worth the ticket price. Somewhat different in their stage persona but a good night out none the less. Just Floyd are on my must see list for some time this year. I've had a couple of near misses, when either them or me have had to cancel at the last minute, but I will make the effort, maybe this Autumn.
However, you musn't go with making a comparison to The Aussies in mind, if you do you will be disappointed. But for around ?15 a ticket and the price of a pint it's not a bad way to spend an evening.