I agree with Irving on this one. The large spindle with increased ability does NOT have enough weight to require re-tuning the motors but does have enough power to do pretty much anything you will need for a good bit of time to come. Fair warning you might find the 3040 type machine to be a very temporary item in your shop or at most the one for the small jobs in the very near future if you start getting into any larger signs or panel work. Also be aware that the Break out board/ drivers have a known history of not lasting long.

Best wishes and best of luck with your work. Welcome to the forum and hope things go well from here.

Michael