Who should Wilder fight next?

Presumably he's still pretty fresh after his last fight. I still think he needs someone to take him rounds before hitting the top of the division, who should it be? Obviously some of these guys have fights lined up, but heres Boxrecs top 20 HW's: 1 Wladimir Klitschko 1155 61(51)-3(3)-0 1996 37 orthodox Kiev, Ukraine 2 Kubrat Pulev 756 19(10)-0-0 2009 32 orthodox Sofia, Bulgaria 3 Tyson Fury 556 22(16)-0-0 2008 25 orthodox Wilmslow, Cheshire, United Kingdom 4 Vyacheslav Glazkov 553 17(11)-0-1 2009 29 orthodox Lugansk, Ukraine 5 Robert Helenius 436 19(11)-0-0 2008 30 orthodox Berlin, Germany 6 Dereck Chisora 428 20(13)-4(1)-0 2007 30 orthodox Finchley, London, United Kingdom 7 Chris Arreola 415 36(31)-3(1)-0 2003 33 orthodox Escondido, California, USA 8 Deontay Wilder 388 31(31)-0-0 2008 28 orthodox Tuscaloosa, Alabama, USA 9 Bermane Stiverne 378 23(20)-1(1)-1 2005 35 orthodox Las Vegas, Nevada, USA 10 Alexander Povetkin 371 26(18)-1-0 2005 34 orthodox Chekhov, Russia 11 Tony Thompson 368 38(26)-4(2)-0 2000 42 southpaw Washington, District of Columbia, USA 12 Tomasz Adamek 362 49(29)-3(1)-0 1999 37 orthodox Jersey City, New Jersey, USA 13 Odlanier Solis 358 20(13)-1(1)-0 2007 33 orthodox Miami, Florida, USA 14 Bryant Jennings 346 18(10)-0-0 2010 29 orthodox Philadelphia, Pennsylvania, USA 15 Christian Hammer 319 15(10)-3(2)-0 2008 26 orthodox Hamburg, Germany 16 Mike Perez 301 20(12)-0-1 2008 28 southpaw Cork, Ireland 17 Erkan Teper 300 12(8)-0-0 2010 31 orthodox Ahlen, Nordrhein-Westfalen, Germany 18 Andy Ruiz Jr 299 21(15)-0-0 2009 24 orthodox Imperial, California, USA 19 Johnathon Banks 293 29(19)-2(1)-1 2004 31 orthodox Detroit, Michigan, USA 20 Carlos Takam 293 29(23)-1-1 2005 33 orthodox Noisy-le-Grand, Seine-Saint-Denis, France Carlos Takam looked pretty solid in his fight with Perez