Very nice cards to protect the blinds, steal them, or balance your range. They have potential, with having top pair 10 with a nice king kicker, or even get a K . You have a 10 blocker which will give you more equity against a flop with JQ, giving you the opportunity yo bluff. K4s is good too, but you have less hands to play with. very bad kicker, the only potential is a flush with K high. In this case you don't want an A flush. So K4s you want to play it with smaller pots, and fold it oftenly at flop.