According to these two sources, the Kingston Savage has slightly faster read speeds (but the SSDNow beats its write) and has more IOPS, so depends what your needs are.
Kingston SSDNow UV400: https://www.kingston.com/us/ssd/consumer/suv400s3
Kingston HyperX Savage: http://www.tomshardware.com/reviews/kingston-hyperx-savage-240gb-ssd,4134.html
Personally i would go for the higher capacity because of its writes and its higher capacity.