Which stepper driver card to buy??

Hi people,

Probably a tough question, but I have just added 3 x 150oz/in steppers
to my Sherline mill and now need a driver card.

The motors are 2.26v and 4.6A.

I'd like to use a driver with 5A but have not found anything at a cost
I can afford. Any suggestions on that?

Next idea is to connect the motor in series for 2.3A and that opens up
a bunch of drivers.

Can anyone please recommend any particular boards from experience in
either the 5A or 2-3A ranges.

I did a search here and found mention of a camtronics 5A board but
cannot find it listed on their website., It looks to me they have gone
with Gecko drives instead. I cannot afford 3 of those as much as I
might like to.

Oh, I will be using Mach3 on the PC. Have not bought it yet but next
in line after the driver and power supply.

Thanks for any help.

Dave