Great article. It drives me crazy that Microsoft, out of the box, has such small sizing and grow by 10% for model and TEMPDB. The first thing I do when I install SQL Server is fix that. Plus I always size the transaction log file for any new database to match what I think it will need to be and have a good growth rate on it. From time to time I check on transaction log file sizes too and run the DBCC LOGINFO() to see how fragmented the transaction log is.