'Each side's websites look convincing. A cursory glance could convince a casual reader either way.'
Agreed, if you're not briefed in the field, that's the case. But dig deeper and you'll find things are different. Behind the evolution material there are experiments and paper after paper after paper. Behind ID material - not much. Nothing that would pass muster as a peer-reviewed scientific paper. No explanation of what ID is, just criticism of the 'other side'. Try it - I've done it myself, it's illuminating.