Where to buy non induction resistors

Where can I buy non-induction power resistors? I'm using a simple
L/R style drive circuit and want to step up my voltage but have found
I have too much inductance to get my speed rate up. I'l thinking if
I can reduce the effect of the wire wond reisitor's im using this
will help.

I've seem lots of power resistors for sale (allied etc.) but none
seem to be non inducting. Looking for 25 watt in the 20-25 hom
range. Any suggestions?

I'm trying to keep on a budget and am trying to learn electronics
while upgrading my desktop CNC mill. so holding off going to a
chopper curcuit as I want to design myself (will leikely eventually
give in and by Gecko drivers).

Roger Nicholas
Akron OH