No, Powercinema 3 doesn't come with EPG... and even though it comes free with the 550pro, it's still overpriced. They should give people a discount for taking that PowerEnema cd off their hands.
Anyway, I currently have Sage tv, which doesn't support the 550pro yet. I use a user made STV (a custom sage interface) that looks exactly like MCE (
link). It's similar in cost to Beyondtv, but I think it's worth it because it comes with lifetime (or as long as they stay in business) EPG. And I use it on my network - Sageclient on my wireless laptop and another client on my desktop pc.