Took the Classic Eurpoe in Aug 2007. In short
Good points
Good value for money since Europe is very expensive and inclusive of food.
Decent hotels in most locations - people complain, but you get what you pay for.
Did not like
Dont get enough free time at locations to visit museums or art galleries or cathederals. Lines at these places are long and they only give you about 2 hrs in each place(max).
Hotels are far away from town/city you are visiting, so nothing to do after you get back to hotel. If you stay back in town and let the coach go, you can certainly take the cab/train back to the hotel. However it does turn out to be pricy. We did do it a few times
Its mostly a sight seeing tour - not a "Holiday". Your wakeup calls are at 6:30 every day.
The add-on programs will cost you more, however most of them are worth it.
Too many full days of just travelling - about 4 full days you are in the coach without seeing much. They should change itenary to remove a few cities and add on the days in other places to make it more comfortable.