Lonely Planet Eastern Europe (also available for Kindle users)
This Lonely Planet guide offers practical advice on independent travel in Albania, Bosnia, Bulgaria, Croatia, the Czech Republic, Hungary, Macedonia, Poland, Romania, Slovakia, Slovenia, and Yugoslavia. This edition contains over 150 detailed maps of countries, regions, cities, villages, updated historical and political background notes, useful words and phrases in 10 languages and details on border crossings, visas and local currencies. Includes pull-out map of Prague.

While this book covers fewer countries, each country is covered in great detail.  If you are primarily traveling in  the Eastern region of Europe, then this is just the book for you.

Lonely Planet Europe On A Shoestring
Coverage: Albania, Andorra, Austria, Belgium, Bosnia-Hercegovina, Britain, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Macedonia, Malta, Morocco, The Netherlands, Norway, Poland, Portugal, Romania, St Petersburg, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and Yugoslavia (Serbia & Montenegro).

Covers 40 countries and over 200 maps. 1284 pages

Lonely Planet Central Europe (also available for Kindle users)

This Lonely Planet guide offers practical advice on independent travel in Austria, the Czech Republic, Germany, Hungary, Liechtenstein, Poland, Slovakia, Slovenia, and Switzerland. Included is a language section with useful phrases in German, Czech, Hungarian, Polish, Slovak, and Slovene of color photos. 130 detailed maps.

While this book covers fewer countries, each country is covered in great detail.  If you are primarily traveling in  the central/eastern region of Europe, then this is just the book for you. In fact I used the previous edition of this guide on my recent trip to central/eastern Europe. Very helpful.

The Rough Guide to Europe on a Budget (also available for Kindle users)

Thirty-two (32) countries are profiled while bringing readers up to speed on Europe's cultural, political, and contemporary life. The book includes suggested itineraries, adventure travel options, maps, hostel listings, transportation information, festivals, arts and culture, top attractions, climate charts and daily budget estimates. 1264 pages.

This guide lacks the in-depth information and precise maps that are a hallmark of Lonely Planet guides, but is still a good choice.