I like that it's simple but not too basic - easy enough for someone who is new at web analytics without being overwhelming or confusing! It also has an option where you can see your traffic by day/week so if there are any spikes in particular days of week then this helps identify what may be happening with those periods (eg holidays).
Nothing really as such- just something about how some things have been done differently than others when using other tools etc which makes me feel more comfortable knowing my data will match up correctly between different platforms /etc.