So I am trying to wrap my head around a few things. Watts generally is power (consumed and delivered) - and here is where I believe that I am getting confused (on several fronts).

I have the following motors and controllers available for playing around to use as a motor on which to drive my Frankenstein mini lathe (7x16 with 3" and 5" chucks - .750" bore)

Option 1. The original 350w 110VDC 1.5Nm peak (maybe) brushed motor and driver from the 7x10 HF mini lathe @110VDC rated rpm: 5000
Option 2. Longs 57BLF03 188w 24VDC 2.4Nm BLDC motor with BLDC-8015A BLDC motor driver running @ 48VDC rated rpm: 3000
Option 3. Link Motor 23H2A2442-01B 4.2A 2.7Nm Stepper motor with a MA860H stepper driver @ 72VDC rated rpm: 1000 (maybe)
Option 4. Stepperonline 34HS46-5004D 5A 8.5Nm Stepper motor with a MA860H stepper driver @ 72VDC rated rpm: 200 (maybe)
Option 5. Yaskawa SGM-08A312 750w 3000 4.4A AC servo using a Yaskawa SGDA-08AS servo driver @ 200VAC rated rpm: 3000

Compared to the original 350w 110v brushed DC motor at low RPM, the BLDC seems like a beast (even at 24VDC) and at 48VDC seemed even more rabid (the driver is rated for it, but would the motor survive?). I think the 750w SGM-08 is probably overkill for my lathe, although tempting me to use it. I was considering using the stepper motors, but they probably won't reach the RPM's I want to do higher speed work.

What is the deal, the 350w motor seems weak in comparison to a 188w BLDC, is it my imagination? What is the highest reasonable voltage to run a 24VDC BLDC motor assuming it's not limited by the driver (which can handle 80VDC)?