i went to europe for 3 months from sept. to dec.
my favourite countries were spain, switzerland, italy and france.
EVERYWHERE in spain is awesome, and relatively inexpensive.
Amsterdam, Holland was pretty cool too.
feel free to pm me with any q's. i went to the following 12 countries: belgium, holland, germany, austria, spain, portugal, morocco, italy, sicily, greece, switzerland, france.
I would definitely buy the Let's Go- Western Europe (or just europe depending on where you're going) the Lonely Planet was garbage and we never used it.
i found that italy, portugal and germany were the hardest countries to communicate in.
good luck and have fun!!