I wish I went there when I was in Ethiopia. I only went to Harar and Dire. Harar was great for historical reasons but the town is 'sleepy' not much activity whatsoever, not much character or difference to Dire Dawa either, beyond it's history and it's strange urban lay-out which seems to be an 'ancient' style because everywhere is 'cramped' like with lane-ways. Anyways it's obvious Harar isn't built modern era, it's following a different urban lay-out to the 'grid' system of the modern era.
Dire Dawa was TOTALLY SHIT. I was expecting much more from the 2nd largest city in Addis. Wallahi Dire is DEAD as hell. I will check out Jigjiga one day definitely.