Wow, 30 machines. I love that...
I have Viking Designer 1, Viking 875 Quilt, Viking 183, Janome 8200, Brother Simplicity (for classes), Viking Serger and a Singer Featherweight (like the machine I first learned on when in high school)
Each one does something really well so I use them all. I bought the lightweight Brother for classes due to a shoulder injury. I think we all need more than one machine.