Reply to Upgrade to Traktor S4 or CDJ's

Im currently using VCI-100SE. Because of the realese of s4,I really want to upgrade my gear (it is so f**kin' awsome!). On ther onther hand,with this amount of money(plus a bit more),I can also buy CDJ's which can also be used as a MIDI controller like Reloop Rmp3. Do you guys have some suggestions for me? Thanks in advance!