Appropriate IRS level?
I have; but I was far more interested in the spiffy skin than the tiny incremental increase in tap diameter. If you like the way it looks now, and you're happy with your tap size, there is no compelli...
Forum Discussion
I wouldn't say it's necessary. I've fully upgraded mine only because I've got more money than I'm able to spend. If you've got other things to spend your money on, then don't worry about upgrading the IRS.
