Worth upgrading from a Dell 2407?

[triggerthat]

Hi guys,

I have a 2407 which I've had for years and is still going very strong. I wanted to know if it is worth upgrading and would I see a big difference considering my current panel is nearly 5 years' old. Would a cheap 24" be better than a 2407 considering how old the Dell is?

 

[triggerthat]

If I did upgrade, it would certainly be something decent, e.g. U2410. But it seems that the upgrade won't be worth the while?