I would have the RS over the new ST.

The FRS just looks the part, the styling is agressive and wider than a normal Focus and even the new ST.

The new ST just hasnt got the road presence that the RS has.

The dash in the FRS is a little bland but theres a few bits you can do to bring it upto spec. The dash in the the new ST is sooooo boring IMO, the only good bit is the 3 gauge pod.

For my money i would buy the Focus RS