Funny you should mention that (performance). I just did benchmarks on the two parsers against a test data set. Only difference is the module used to parse the lines of text from the log files, parsers are set up outside of the benchmark, single initial run to prime to I/O buffers, etc. The results were within 2-10% either way, depending on the data set - $1 and company in the lead, but negligible in the big picture. Since the log files are stored on disk, I/O is the limiting factor at the moment. The parsing uses less than 15% of a single processor.