I like Wardom over either but between the 2 it would have to be XU52 cause Ksendra's DR doesn't help so much in ELO as if you use it, it means losing your big threat card. And there isn't as much scare to do less damage as a min 3 will leave most 2-3* unscathed.
With the new bans you could do:
Robb Cr --> Jessie
Mok --> Bristone