I'm looking to get a few new nimh batteries. They Lipos is just too much for my kids. Does anyone know anything about these? http://www.promatchracing.com/proddetail.php?prod=4600

I have some fusion matched 4200's (intellect cells) now and just wonder how these would compare.

Those look like good practice packs. The matched ones for racing would obviously be better. But at last years Snowbirds I think just about every driver there used Ener-G 4600's.