Michael.Learns.To.Travel hey! i just posted a similar Euro trip for mid-july to mid-august.
I guess, it's all about goals and interests.. if you guys really want to enjoy a country, then you can actually stay that long on every city you're going. while if you want a blast of culture change (like on my case) then a continuous rail trip would fit best. My plan is to actually get the most out of my Eurrail by travelling all over Europe, i'd probably hit the capitals as well as the coasts (since it's summer) and would be staying a day or two in a city which means not more than a 3 or 4 days in a country.. if ever you could be on the same country on any of those dates, a coffee together will not be bad ;) goodluck!