As far I am aware, the only two infrared films still available are Ilford SFX (not a true infrared film, but pretty close), and Rollei Infrared. Apparently you can get aura effects by overexposing the Rollei, but I don't have any experience with this film yet. I used my last roll of HIE last year and am going to work through the rolls of Efke I have left before moving onto the Rollei.
Why don't you try both and see which one you like best?
Gone, but not forgotten: HIE and Efke IR820