best way to plot error bars for multiple data?

Hi

I have five pairs of curves to plot on a 2d graph. This, I can just about manage- I use five colours and then distinguish the curves in each pair by making one solid and one dotted.

However, I also have error bar data that is quite interesting. The problem is, these error bars overlap and it's getting extremely cluttered.

The value in this graph lies in the comparisons you can make between different pairings, so I don't want to get into subplots if I can help it.

Can anyone suggest a way of displaying this data clearly?

my mean values are stored in two 70x5 matrices, the standard deviations likewise.

Thanks for any help

Mike