Servos vs Steppers costs

Hi,
I am getting ready to retrofit the motors and drives on
a 2 axis ball screw driven table on an old mill in almost
unused condition as I have posted previously.
I was looking at the Gekko G201 drives at first but
after reading about the G320 and G340 I'm wondering if the
steppers are the way to go.
The table had 350 in.oz. 5 wire unipolar motors on it, w/1:1
drive ratio, w/an ancient drive and would move at 10
in./min. I was going to use the G201 drive and some 720 in.
oz. bipolar motors and was expecting about 20-30 in./min.
from this set up.
I am curious if maybe servos are the way to go now that a
drive is available for $100.
I saw 420 in. oz. servo motors on Camtronics web site for
$100 w/encoders and not knowing the difference between the
ratings of steppers and servos or even stepper and servo
drives is this even close to being a possibility?
The original setup and plan is as follows:

> To summarize the details of your Tape-O-Matic and make

it easier for

> others to follow i have condensed previous posts.
>
> You want to use a like new (mechanically) 1967 Pratt &

Whitney

> Tape-O-Matic 2 axis machine for drilling with peck and

some 2D

> milling.
>
> The Tape-O-Matic was primarily designed for drilling but

is capable of

> light duty milling.
>
> You want to use a Tape-O-Matic for drilling with peck

and some 2D

> milling.
>
> 1) Machine has zero backlash ball screws on X and Y

axis.

>
> 2) The steppers are 400 in. oz. 5 wire unipolar

steppers mounted

> with a 1-1 belt ratio.
>
> 3) Spindle has a 3HP motor turning it.
>
> 4) Machine originally had a speed of 10 in./min. max.

But you would

> like to see 30" to 60"/min.
>

.200 inches pitch zero backlash ball screws

Yes, I have a manual quill handle also.

>
>

> > > > Based on the info I have that I can buy (2) 720

in. oz. motors

> > > ($250 ea.), (3) drives (gecko), and CNC Pro

software ($550 for

> > > > software and drives) for $1050 and estimate $300

for power

> supply.
> > > >
> > > > My questions are:
> > > > 1. Can/should I keep the motors?
> > > > 2. Is steppers the best way to go for lowest cost

when

> performance
> > > isn't critical?
> > > > 3. Any suggestions for lowering cost?
> > > > 4. Any experience with any of this

equipment/software?

> > > > Thanks in advance
> > > > Bob

Thanks Bob