I\'m about to start a new project which should have a rather large database.
The number of tables will not be large (<15), majority of data (99%) will be contain
Some interesting points regarding Google BigTable in there are...
Bigtable Vs DBMS
I highlighted the Joins and No SQL Support as you mentioned you will need to run a series of reports. I dont know how much (if any) not having the abililty to do this will have on you running reports if you where to use this.