I am always impressed and motivated by Hossmachine's videos. They are a reminder that if you really want to go to the trouble, you can make these little machines do wonders relatively speaking.
On the tapping issue, I think you have to consider how often you are going to need the function and what you're willing to spend in time and or money to do it on the machine.
I had one mill in my shop that did high speed rigid tapping. It was a huge time saver and fun to watch but there was another machine that was even more impressive to me. We bought an articulating arm tapping unit (about $1000.00) using a pneumatic tapping motor. We clamped it to a heavy duty table and it often out preformed the mill. With little or no setup, you could tap hundreds of holes in no time at all.
-Greg
