yeah the cagesides are a good little pair of fairtex clones, they were one of my R&D victims that i ripped apart last year. They are sized a bit larger and have a softer liner so out of the box they are comfier then the silverback's but the silverback's have more padding, better wrist support and use a thicker leather. So it comes down to personal preference in the end.
if your looking for a fairtex mma glove but don't want to pay the fairtex price the cagesides are a good bet but if you want a fairtex style glove with more padding, awesome wrist support, and don't mind the break in period for the finger loops then the silverbacks are good to.