First of all, if you have done any testing at FTDNA, I would suggest you join the U106 Haplogroup Project https://www.familytreedna.com/public/U106/default.aspx
Secondly, if you are interested in learning more about the U106 project, I would encourage you to join our Yahoogroup forum. To join, send an email to:
[email protected] stating why you would like to join this forum.
Finally, since you have already tested L48+ I would recommend you hold off on ordering a SNP pack test until the U106 Project develops their packs. If you can give my your FTDNA kit number, and join the U106 Project, I can look at your results and possibly help place you better.
The U106 Project has started analyzing the ages and the places where the various subclades have been found. L47 (and especially its Z159 clade) has been found in Eastern Europe at a much higher level than Z9 (and its subclade Z8), which are found at a much higher level in the low countries and England. This isn't to say that L47 is not found in England and Z8 is not found in Eastern Europe, only that their relatively highest frequencies are in different parts of Europe.