Stingray, the riding was great, as is almost always the case here in Heidelberg. When you come up from Stuttgart, PM me. I have a pretty good knowledge of the trails here, adn John, of John's Radhaus (bike shop) knows even more. I'm almost always up for a ride, as long as I can start pestering the wife about it a few days in advance.
Jerk_Chicken,
YEs the riding here IS great. There is a lot of singletrack. There are also a lot of fireroads so sometimes it's easy to get sucked into the fireroad network and miss a lot of the singletrack. The best way here is to get to really know te trails here, and you can piece together various stretches of singletrack together for a pretty good ride. (or ride with someone who knows the trails well enough to do this) I have a couple of routes where I can ride for a couple of hours on about 90% singletrack.
Anyway, look me up if you guys are in the HD area (at least until June when I will be heading to Kaiserslautern). If you want to make a day trip of it, let me know in advance and maybe I can guide you around for a few hours on the trails, and if I can't I know a couple of other riders here who can.
Jonesy