Stepper motor flamewar time! (Hybrid vs wooden-magnet steppers) :)

Hi Folks,

How good are Hybrid motors compared to the steppers of old (circa 1983)?
I ask because I'm halfway through converting an old cnc lathe to new
control.
I've found the long-axis just isn't beefy enough for my needs, and am
tempted by these new hybrid motors.

That said, there are some factors against me:
.I rewired the original motor from 4-wire parallel to 4-wire series (my
chopper driver is only 2.5A max, the motor is rated 3A Unipolar)
.I'm currently only running on a bench PSU (13.5V rather than the 30V
I'll be at when I build my own PSU)

The old controller of the motor wasn't a chopper though, just a
thunk-thunk-you're-on type bipolar controller (basic H-bridge)
What makes me wonder though is how I can without too much effort turn
the fully-energized stepper by hand.. it just doesn't seem to have all
too much holding torque.
Am I correct in assuming that even in parallel-wired mode this holding
torque would be the same when the motor is stationery?

Do you think switching to a new 220Ncm Hybrid motor will solve my problems?
Or should I be spending my money on a higher current single-axis driver
(ie 4.2A) and rewire the motor to 4-wire parallel?

Thanks again!
(I'll post pics on my site soon, I'm getting a new digital camera
tomorrow :)

Regards, (http://www.silverkatt.co.uk)
Abby