mbogucki,
I had the same question almost a month ago.....
I did not actually post it.. but I could not make up my mind...
I enventually deside on xylotex, I'm not sure that the FET board has microstepping...
but I did not like that I had to figure out and use some kind of limiting resistor...
I can only guess that those resistor can get very hot by the heat sinks I've seen on them..
(I'm loving my xylotex board.. ( Motors do not even get warm, I put to small fans on the driver chips but they also do not seem to get hot. )
well just my 2 cents !
Luis