Looking at some M1A1 AIM replacement tracks.I see these.

Bronco AB3522

AFV Club 35012

Any thoughts or recommendations

Thanks

I'd go with bronco, but also look at masterclub. they use pins and fewer parts

After building one side of Bronco T158LL track, I would recommend anything but that set.

I recommend Def Model's T158 track as it has the correct skeletonized center guides and the end connectors fit firmly on the track pins. They assemble like the AFV Club set but the center guide is a seperate part and they can be a bit fiddly to get in place. They do look great when assembled and unlike the Bronco set do not require any glue.